itinkso9
New Member
Hey guys, i had to rip out my alarm a while back so it don't feel safe leaving my car parked anywhere. so today i did this DIY, i made a Kill switch for my fuel pump and my clutch with a blinking LED that blinks when the switch is activated. all at the touch of one switch. here's the break down.
What you need:
- DPDT Relay (Radio Shack) $8.00
- SPST Relay (Radio Shack) $6.00
- SPST Switch (Radio Shack $2.00
- 5v Flashing LED (Radio Shack) $2.00 (12v flashing is ideal, but my radioshack didnt have any. if you get luck ignore the resistors)
- LED holder (Radio Shack) $3.00
- 220 ohm Resistors (Radio Shack) $2.00
- 10 Ohm Resistors (Radio Shack) $1.50
- Red 18ga Wire (Radio Shack) $5.00 (Optional: i wanted to have hot wires red and grounds/regular wires black)
- Black 18ga Wire (Radio Shack) $5.00
- Wire Connectors for 18ga both Male & Female (Radio Shack) $2.00
- Couple zip ties
okay, so before we begin, the concept of using the 2 relays is so that you'll close 2 circuits by the flip of one switch. when the switch sends power to the circuit, the relays take power away from the LED. so you now have closed circuits to where the car will run, and an open circuit on the LED. when the switch is switched off, the LED now gets power and the 2 Circuits to start/run the car will now be opened. i liked this idea because you now have a blinking like when the car is not startable, and 2 kill switches all at the flip of one switch. if a thief comes he now thinks "this guy has an alarm" and tries to go for it. now he gets in....he hot wires the car, no crank....he looks around, say he finds the clutch kill switch....over rides it. now the car cranks but wont start....hopefully he will give up. if not somebody will hopefully spot him in time. i don't think thiefs would like to trouble shoot when they are trying to steal a car now...lol. so lets get stared. sorry, no pics.
I nor Clubcivic is responsible for any mistakes you may make or any problems that you could create. do this at your own risk.
Here's a SPST Relay explanation, a DPDT relay explanation, and also a full schematic of the whole thing.....but incase you arent good with schematics, then here's the run through.
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Uploaded with ImageShack.us
Uploaded with ImageShack.us
* Since we are working with electricity, disconnect you negative battery cable before you start*
Step 1: decide on what 2 circuits you want your kill switches to be on. mine were the Clutch and Fuel Pump Main Relay. but you could have other choices too, Clutch Switch, Fuel Pump, Fuel Pump Relay, Ignition Switch. up to you. decide where you will mount your SPST Rocker switch, and also your blinking LED. you want the Rocker switch to be in a hidde, yet easily accessible for YOU location.
Step 2. now that you've got those decided. you can start by running for Power Wires. Remove the kick panel under the steering wheel. 3 screws. 2 on the left side, and one the right. you'll need 2 coming from the battery into the car under the steering wheel. there is a grommet under the brake fluid reservoir on the fire wall that i used. may take some time to get those wires through but you'll get it. DO NOT CONNECT THEM TO THE POSITIVE TERMINAL YET.
Step 3: now that those are through connect one to your SPST Rocker switch, and then run a wire from the switch. crimp on some female Connectors and tape some electrical tape around them. Slip the one from the switch onto Contact 7 of the DPDT relay, and the other one onto contact 5.
Step 4: Look for a Common Ground Location, mine was under the hood latch release kick panel (same ground as i believe was for the SRS). Crimp a female connector to one end of a black wire and run it to your ground location. slip the female connector onto contact 8 of the DPDT. don't secure the ground bolt yet, as you will have more ground cables coming
Step 5: drop your glove box (pushing in the sides to pass the stops. you can see the Main Relay on the right side inside the dash. take off the right side panel of the dash board and a couple kick panels on the passenger side. unplug the main relay and set it aside. carefully undo the wire protection on the harness and look for the solid black wire. this is the ground wire. cut this wire in half with enough room to crimp on some connectors to both ends you just cut. i did one male and one female (incase i need to by pass my kill switch for any reason). now look to the left, you can see a little opening around all the wires, and vents etc. you need to run a wire long enough to reach your real through here (behind the radio console). you don't have to remove the radio and stuff. this will also take some time. but you'll get it. on the ends that are in the glove box area, crimp on some connecters to those wires you just ran. make sure the'll connect to the 2 on the relay harness that you just did prior to running the wires. connect one new wire to one relay wire. and do the same with the others. on the other ends of these wires (steering wheel area) crimp on some female connectors and slip one of the wires onto contact 4 & one on contact 6.
Step 6: find a place to mount you LED bulb. on the positive lead (the longer one on the led). twist 2 "220 Ohm" resistors to the positive lead as well as 3 "10 Ohm" resistors. (this is so you don't blow your little 5v led with 12 volts going through it. if you found a 12v flashing then ignore the resistors. twist the end of the last resistor to the end of a red Wire. run the wire from your LED location to the DPDT relay. on the relay end of the wire crimp on a female connector and slip it onto terminal 1 on the DPDT. now go back to the negative lead of the LED and twist on a black wire to that lead. run the wire to you common ground location. i put some electrical tape over each lead and connections and all those resistors to prevent shorting it out. i put an extra 220 ohms on this connection just to assure im not over powering the LED. mount your LED. if it's on a panel that you needed off, then just set it asside for now so you dont damage your work.
Step 7: cut a wire long enough to reach your SPST relay. i have both of mine under the steering wheel. so my wire was only about a foot long. crimp on a female connector to both ends and slip one onto contact 3 on the DPDT and on onto contact 86 on the SPST relay. run a wire long enough to reach you common ground from your SPST relay and crimp a female connector to the relay end and slip it onto SPST contact 85.
Step 8: since i did the clutch switch i'll run you through that one, but if you are using something else it will be the same directions, plus getting the access to it's location (Fuel Pump Mainly). anyways, under the dash look at the clutch pedal. there are 2 switches. the one you want is the higher one. unplug the connecter and cut it off being sure to leave enough length on the connector side and the harness side for re-installation if you want to, keep that connector in a safe place. my switch was bad already, and this allows you to start you car without pressing the clutch. lol. i believe it was a black wire and a blue wire. crimp on a male and female connector to the harness end (same reasoning as the relay part. to bypass incase you have to. run some wires from this location back to your SPST relay. crimp on the matching connectors to the clutch switch end of the new wires and plug them into your clutch switch harness. same as the relay one you did ealier. new wire to black harness wire and other new wire to the blue harness wire. zip tie it up away from the clutch pedal. on the SPST relay end, crimp on some female terminals to those new wires and slip them onto SPST relay contacts 87 & 30. now go and secure your common grounds.
Step 9: You're Done! now go into the engine bay and secure those 2 power wires to you positive terminal, and then reconnect you negative terminal on your battery. test out your new work. with you SPST switch off, the led should be blinking. try to start your car, no crank, nothing. turn you SPST switch on. your led should not be blinking anymore. start your car. it should start and run fine. turn the switch off while its on just to test. car should die out. now that everything is working. go ahead and tidy up those wires and relays and put your car back together.
hope y'all enjoyed this DIY. my car feels that much safer now. even if they did find the relays....your stealing a car. do you really wanna take the time to sort that wiring mess? i wouldnt, or say he sees the LED. "he has an alarm" gets into the engine bay and snips your power wires that look like alarm wires. LED goes off, "haha got ya!" tries to start the car, suprise! you just disabled the car even more! haha. let me know how it turns out for you
What you need:
- DPDT Relay (Radio Shack) $8.00
- SPST Relay (Radio Shack) $6.00
- SPST Switch (Radio Shack $2.00
- 5v Flashing LED (Radio Shack) $2.00 (12v flashing is ideal, but my radioshack didnt have any. if you get luck ignore the resistors)
- LED holder (Radio Shack) $3.00
- 220 ohm Resistors (Radio Shack) $2.00
- 10 Ohm Resistors (Radio Shack) $1.50
- Red 18ga Wire (Radio Shack) $5.00 (Optional: i wanted to have hot wires red and grounds/regular wires black)
- Black 18ga Wire (Radio Shack) $5.00
- Wire Connectors for 18ga both Male & Female (Radio Shack) $2.00
- Couple zip ties
okay, so before we begin, the concept of using the 2 relays is so that you'll close 2 circuits by the flip of one switch. when the switch sends power to the circuit, the relays take power away from the LED. so you now have closed circuits to where the car will run, and an open circuit on the LED. when the switch is switched off, the LED now gets power and the 2 Circuits to start/run the car will now be opened. i liked this idea because you now have a blinking like when the car is not startable, and 2 kill switches all at the flip of one switch. if a thief comes he now thinks "this guy has an alarm" and tries to go for it. now he gets in....he hot wires the car, no crank....he looks around, say he finds the clutch kill switch....over rides it. now the car cranks but wont start....hopefully he will give up. if not somebody will hopefully spot him in time. i don't think thiefs would like to trouble shoot when they are trying to steal a car now...lol. so lets get stared. sorry, no pics.
I nor Clubcivic is responsible for any mistakes you may make or any problems that you could create. do this at your own risk.
Here's a SPST Relay explanation, a DPDT relay explanation, and also a full schematic of the whole thing.....but incase you arent good with schematics, then here's the run through.
Uploaded with ImageShack.us
Uploaded with ImageShack.us
Uploaded with ImageShack.us
* Since we are working with electricity, disconnect you negative battery cable before you start*
Step 1: decide on what 2 circuits you want your kill switches to be on. mine were the Clutch and Fuel Pump Main Relay. but you could have other choices too, Clutch Switch, Fuel Pump, Fuel Pump Relay, Ignition Switch. up to you. decide where you will mount your SPST Rocker switch, and also your blinking LED. you want the Rocker switch to be in a hidde, yet easily accessible for YOU location.
Step 2. now that you've got those decided. you can start by running for Power Wires. Remove the kick panel under the steering wheel. 3 screws. 2 on the left side, and one the right. you'll need 2 coming from the battery into the car under the steering wheel. there is a grommet under the brake fluid reservoir on the fire wall that i used. may take some time to get those wires through but you'll get it. DO NOT CONNECT THEM TO THE POSITIVE TERMINAL YET.
Step 3: now that those are through connect one to your SPST Rocker switch, and then run a wire from the switch. crimp on some female Connectors and tape some electrical tape around them. Slip the one from the switch onto Contact 7 of the DPDT relay, and the other one onto contact 5.
Step 4: Look for a Common Ground Location, mine was under the hood latch release kick panel (same ground as i believe was for the SRS). Crimp a female connector to one end of a black wire and run it to your ground location. slip the female connector onto contact 8 of the DPDT. don't secure the ground bolt yet, as you will have more ground cables coming
Step 5: drop your glove box (pushing in the sides to pass the stops. you can see the Main Relay on the right side inside the dash. take off the right side panel of the dash board and a couple kick panels on the passenger side. unplug the main relay and set it aside. carefully undo the wire protection on the harness and look for the solid black wire. this is the ground wire. cut this wire in half with enough room to crimp on some connectors to both ends you just cut. i did one male and one female (incase i need to by pass my kill switch for any reason). now look to the left, you can see a little opening around all the wires, and vents etc. you need to run a wire long enough to reach your real through here (behind the radio console). you don't have to remove the radio and stuff. this will also take some time. but you'll get it. on the ends that are in the glove box area, crimp on some connecters to those wires you just ran. make sure the'll connect to the 2 on the relay harness that you just did prior to running the wires. connect one new wire to one relay wire. and do the same with the others. on the other ends of these wires (steering wheel area) crimp on some female connectors and slip one of the wires onto contact 4 & one on contact 6.
Step 6: find a place to mount you LED bulb. on the positive lead (the longer one on the led). twist 2 "220 Ohm" resistors to the positive lead as well as 3 "10 Ohm" resistors. (this is so you don't blow your little 5v led with 12 volts going through it. if you found a 12v flashing then ignore the resistors. twist the end of the last resistor to the end of a red Wire. run the wire from your LED location to the DPDT relay. on the relay end of the wire crimp on a female connector and slip it onto terminal 1 on the DPDT. now go back to the negative lead of the LED and twist on a black wire to that lead. run the wire to you common ground location. i put some electrical tape over each lead and connections and all those resistors to prevent shorting it out. i put an extra 220 ohms on this connection just to assure im not over powering the LED. mount your LED. if it's on a panel that you needed off, then just set it asside for now so you dont damage your work.
Step 7: cut a wire long enough to reach your SPST relay. i have both of mine under the steering wheel. so my wire was only about a foot long. crimp on a female connector to both ends and slip one onto contact 3 on the DPDT and on onto contact 86 on the SPST relay. run a wire long enough to reach you common ground from your SPST relay and crimp a female connector to the relay end and slip it onto SPST contact 85.
Step 8: since i did the clutch switch i'll run you through that one, but if you are using something else it will be the same directions, plus getting the access to it's location (Fuel Pump Mainly). anyways, under the dash look at the clutch pedal. there are 2 switches. the one you want is the higher one. unplug the connecter and cut it off being sure to leave enough length on the connector side and the harness side for re-installation if you want to, keep that connector in a safe place. my switch was bad already, and this allows you to start you car without pressing the clutch. lol. i believe it was a black wire and a blue wire. crimp on a male and female connector to the harness end (same reasoning as the relay part. to bypass incase you have to. run some wires from this location back to your SPST relay. crimp on the matching connectors to the clutch switch end of the new wires and plug them into your clutch switch harness. same as the relay one you did ealier. new wire to black harness wire and other new wire to the blue harness wire. zip tie it up away from the clutch pedal. on the SPST relay end, crimp on some female terminals to those new wires and slip them onto SPST relay contacts 87 & 30. now go and secure your common grounds.
Step 9: You're Done! now go into the engine bay and secure those 2 power wires to you positive terminal, and then reconnect you negative terminal on your battery. test out your new work. with you SPST switch off, the led should be blinking. try to start your car, no crank, nothing. turn you SPST switch on. your led should not be blinking anymore. start your car. it should start and run fine. turn the switch off while its on just to test. car should die out. now that everything is working. go ahead and tidy up those wires and relays and put your car back together.
hope y'all enjoyed this DIY. my car feels that much safer now. even if they did find the relays....your stealing a car. do you really wanna take the time to sort that wiring mess? i wouldnt, or say he sees the LED. "he has an alarm" gets into the engine bay and snips your power wires that look like alarm wires. LED goes off, "haha got ya!" tries to start the car, suprise! you just disabled the car even more! haha. let me know how it turns out for you