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Stl-986 · 09-03-2022, 02:55 PM

Having a most system or not wont be the issue. Doubt a different radio was actually put in also.

Since this is new to you, I would start again with the simple stuff, change the fader to be on the front speakers. If that doesnt do anything then move on to wiring. easiest to check is the amp in the front trunk. There will be 2 connectors...the most(fiber optic cables) and a bigger one with power & speaker input & output wires.

If all that checks out and is connected move on to the radio & look for the same.

If all that checks out, the front amp could be bad. I would spend any time checking the speaker tray. if the front dont work then the rears will most likely not work either. Most common is a cable disconnected or a bad amp.

09-03-2022, 02:55 PM	#12
Stl-986 Registered User Join Date: May 2017 Posts: 1,180	Having a most system or not wont be the issue. Doubt a different radio was actually put in also. Since this is new to you, I would start again with the simple stuff, change the fader to be on the front speakers. If that doesnt do anything then move on to wiring. easiest to check is the amp in the front trunk. There will be 2 connectors...the most(fiber optic cables) and a bigger one with power & speaker input & output wires. If all that checks out and is connected move on to the radio & look for the same. If all that checks out, the front amp could be bad. I would spend any time checking the speaker tray. if the front dont work then the rears will most likely not work either. Most common is a cable disconnected or a bad amp. __________________ 2000 Boxster Tiptronic 2003 Boxster 2003 996 C2 Cab 2002 996 (SOLD) 1986 944 (gone but missed)