[ImperialCrown]

I would simply plug the MP3 player output into a cassette adapter and listen through the Infinity system?

http://www.amazon.com/Philips-USA-PH-62050-MD-To-Cassette-Adapter/dp/B0007R4LI8/ref=sr_1_3?ie=UTF8&qid=1367944548&sr=8-3&keywords=cassette+adapter

 

[Oklahoma Wolf]

Double check your wiring to be sure the aftermarket harness is wired properly. Sounds like the aftermarket head units are muting themselves for protection. The Infinity amps do have protection against getting too much signal... they just stop getting louder. But that shouldn't be an issue at half volume.

On the subject of power ratings, most if not all aftermarket decks are not really capable of outpowering the factory ones. Those 50 watt peak numbers are pure marketing, while the 20 watt number is the more honest one. The factory unit will be able to do that as well... most Chrysler decks since the 80's are pretty good for power output.

It should be mentioned that if the dash speakers are the only ones cutting out, there is a known issue with the bass blocker crossovers on the back of them going intermittent. Those can't be fixed, so the best way to deal with them is to just bypass them.

 

[carafan]

Turns out im an idiot . The wring was fine even tried another harness from my 96 Sport to be sure upon closer inspection there was a small ground wire that i missed that was plugged into the factory HU that i did not plug into the aftermarket one oops . Plugged it in problem solved sounds good now no clipping i am assumming that wire goes into the amps ? In any case thanks for the help

 

[Oklahoma Wolf]

That wire grounds the amp relay - the woofer amps won't turn on without it. All your bass would have been coming from the dash speakers.