Resto Sound Help needed. Electrical? Amp? (5 Viewers)

[landcrshr]

The body side harness connector you're using requires the amp...

Correction, when the two grey plugs are used for the headunit, the factory amp needs to be unplugged/removed.

Maybe it had been unplugged and the body shop plugged it back in?

The two grey plugs are wired directly to the speakers. If two amps share this connection, each amp will see the other as a direct short.

 

[ppc]

Not sure why it would work before all the work and then stop working after the work with the same components.

Obviously something has changed. Sounds like you had someone else do this work. Don't assume they did everything correctly

Correction, when the two grey plugs are used for the headunit, the factory amp needs to be unplugged/removed.

Maybe it had been unplugged and the body shop plugged it back in?

The two grey plugs are wired directly to the speakers. If two amps share this connection, each amp will see the other as a direct short.

This is 100% correct except having two amps (aftermarket head unit builtin) and OEM external amp will not cause a "direct short" that would blow a fuse, just very poor quality audio output. Fuse blowing is being caused by something else.

I'm guessing whomever did this work reconnected the OEM amp and then tried to rewire the gray connectors to solve the problem.

 

[FFFbuff]

Thanks for all the replies. Sending everything over. Appreciate everyone in here.

 

[landcrshr]

...having two amps (aftermarket head unit builtin) and OEM external amp will not cause a "direct short" that would blow a fuse...

Actually, I didn't say it caused a direct short, I said each amp "will see" the other as a short. (When both are powered that is.)

I learned this lesson as a teenager when I tried hooking up two amps to one pair of speakers to see if it would double the power. It didn't, it blew fuses.

The output impedance of a class-B amplifier is essentially zero.

 

[Bella1992]

If you end up not using the radio I’d be interested. I usually just call Crutchfield and talk to them and spend hours and hours and weeks and weeks with my entire car disassembled until I finally get it to work.