line out converter issues

[B16a2_ek]

my line out converter for putting rca outputs on a factory radio doesnt work. i spliced into the rear speakers double checked over and over. my amp turns on and everything. when i ground the converter and connect my rca's the red warning light on my amp turns on. if i connect the rcas without the converter being grounded i get nothing. either way grounded or not i get no sound. whats the problem here? i apologize but this isnt in my hatch its for a 01 is300 i took the converter out of the IS to put it in the hatch but i did work before.

 

[kaace]

swap out converters....the output of the deck might be too high for the converter...

are you just splicing into a stock deck?

 

[B16a2_ek]

yup just a factory radio.. but I just found out that my car has a factory amp as well. would that make any difference ?

 

[kaace]

definitely...wire the converter before the amp...that should fix your problem...

 

[B16a2_ek]

yea but the previous owner had it in right at the speakers.. and it worked?

 

[kaace]

what do you mean "right at the speakers"?