Car alarm output question

[apekd]

ok so I have a Scytek Astra 777 alarm that I am RE-installing in my hatch. I got all the wires ready to go but one. My parking light relay. I wanted to have it on my high beams as I am going to use them as fog lights. Figured that I would put a relay in form the wire to the ground and then power for the lights. But the problem that I have is that in the manual it says to not attach it to the headlight circuit. I cannot understand why at all because as long as a fuse is in place it should be good, and the wiring I would be using would supply only a few amps really. so does anybody think that this would work?? here is a link to the manual if you would like to look at it.
http://www.scytek.net/manuals/astra/a777.pdf

 

[eskateboarding7]

I believe it would work if you diode-isolated the wires after the relay to prevent any current from flowing back. That may be why they suggest not to do it, assuming that people won't isolate it.

 

[apekd]

cool thanks. I'll give it a try some time. Right now I'm ordering my door triggers, and a few other sensors so I can feel safer at night