New Radio won't work with factory amp?

Jwint86062 · May 6, 2010

I have a 91 LX and it came with im guessing fords premium sound. I have an equalizer and a radio above it. My aftermarket radio came out of my 90 bronco and the plugs would be the same except for the equalizer connection. Anybody have this problem. I went to an audio store but they were no help.

87GT Drop Top · May 6, 2010

I had the same problem. If I remember correctly I had to remove the amp and plug the adapter plug into the harness the amp was plugged into. I also had to splice the front speaker together so all 6 speaker would work.

Ford Receiver Wire Harness For select 1987-up Ford and Mercury models at Crutchfield.com

Chrome_Rust · May 6, 2010

If you look on the passenger side inside the console where the radio you will see a grey and a black connector. disconnect those, and then use a standard Ford radio harness and all will work. that is where the factory pigtailed the radio harness to use the "premium" sound. If you dont see it, trace the harness from the radio down, and you will see it. when i pulled the dash from my 93 I had that, plus the 91 i stripped, plus it go up in years too, a 95 V6 car I have most of my dash harness from had it....

montegoman351 · May 6, 2010

I had the same problem with my Lincoln, there's a wire you must hook up, if yours has it, its the amp turn on wire. If you don't wire it in, you'll have NO sound from the speakers.

Jwint86062 · May 6, 2010

Thanks, ill try to trace the wires for now and let you know how it turned out.

killer5.0 · May 7, 2010

i just disconnected my factory amp all together and removed the wiring and used a standard mustang radio install kit.

Jwint86062 · May 7, 2010

the guy at the audio store showed me that. i didnt know if there was another way to do it. so i didnt buy it. It was $50 i think ill pickl that up. thanks

Shakerhood · May 7, 2010

killer5.0 said:
i just disconnected my factory amp all together and removed the wiring and used a standard mustang radio install kit.

I am in the process of installing a new stereo in my car, I also disconnected and removed the factory amp and used the aftermarket mustang wiring kit.

montegoman351 · May 8, 2010

It'll sound not as good without the amp plugged in...I ran into it...it was a just 1 wire...if you can figure it out and can run the factory amp, it'll sound really good...

killer5.0 · May 8, 2010

well the ppl before me really rigged up the stock amp harnesses and then ran their own wires back to the radio harness...didn't care for the install and too much wiring under the carpet (made it bulky) decided to just ditch it...it isn't as loud as it was before and i put all new speakers in...but i plan to run my subs and amp so it will be only highs running to my speakers no bass so i can crank it up a lot louder

Jwint86062 · May 9, 2010

I ended up pulling out my factory amp. i followed the harness from the amp up under the dash and found another harness that had the two connectors i needed to make the aftermarket radio out of my bronco work. when the radio was in the broco i used a kit from the audio store to make it work. that same kit matched the connectors on my stang. problem solved thanks for the help.

New Radio won't work with factory amp?

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