get a test like and check for a constant voltage make sure your key is off then look for the acc by testing the wires by turning the key on and off and if the light does the same thats acc and then ground but that should be black with silver strips on it and the speakers can be tested with a 9volt battery and two wires plus the wires into the harness spots or the wires if the harness is cut off and listen for the speaker to pop it wont hurt it car stereo shops do this all the time.or you can just pull the speakers out and mark the colors or the wires attached to it and if ur putting in speakers that are not stock make what ever one of the wires you want + and just make sure you mark for your records what one is positive it will save time and hopefully patience.If you have any questions just email me at
[email protected] and I will help the best I can I have been fixing stereo stuff for about 10 years now so feel free to ask
Savage