I'm going to buy one which one should I get, service or electrical trouble shooting?? or is there another one that I havent found that would be better

TIA

 

Well I have the acura service manual for our cars. I imagine its similar to the helms service manual. It has some electrical stuff in there, enough for me to do my non-navi to navi conversion.

Unless your having serious electrical issues, the service manual is sufficient

 

Agreed.