|
W201 Alpine 6 speaker amp diagnosis
I need some help figuring out what is wrong with the audio system in my car. I discovered while looking for a fuel leak that the amp was pretty much bypassed so I wanted to figure out why they did that. I repaired the connections at the amp and lost my door speakers. I also didn't have signal to the rear speakers, which I found the fader was disconnected.
Let's start with the wiring diagram:
I think the amp is bad because I have bypassed the fader by putting a jumper between S1 & A1 and S2 & A2 to send signal to the rear speakers. It seems that signal was already going directly to the front speakers because when the fader was unplugged, the front speakers worked. The diagram seems to suggest that they should not work with the fader unplugged. I am getting 12V power at the amp through pins 10 & 6 and proper signal from the radio through pins 4 & 5 and 8 & 9. I get no signal out of pins 1 & 2 and 11 & 12 when connected to the amp. I tested the speakers by hooking up a C battery at the amp and each clicked so the wiring to the speakers is fine. I have an aftermarket radio that I wired in but I believe it is wired correctly (the harness was hacked to bits for a previous radio install by the PO). My only concern is Pin 7. My antenna works periodically from what I think is a bad connection but really not sure. Seeing as the wire to the antenna and to pin 7 are on the same connection and are the same color and 12V is supposed to go to the antenna, would it make sense for 12V to go to pin 7? I am currently getting 0 volts through pin 7. I would just think it might be weird to have two 12V inputs to the amp.
__________________
Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.
|
02-21-2016, 07:30 PM
Linear Mode
