I have a 99 GT with the mach 460 system. About a year ago I installed a new head unit (JVC MP3 Player) and everything worked fine. All the speakers were on, all 4 channels worked perfectly.
Last week, the rear amps shut off. All 4 channels still work for the tweeters, but that's it.
Nothing changed, but I checked the plugs in the back of the stereo, that's all good.
I checked all the fuses under the hood and they're all good. I checked all the fuses under the dash, all good.
On each amp in the trunk there are two plugs, one with 8 wires (guessing for the speakers) and one with 3 wires (guessing power, ground, and remote). With key on and radio on, I tested the three wires with my volt meter. When grounded to one wire in the plug, the other two got 11.4v and 6.4v, and it was the same on each amp.
Now, there's a plug directly in between the two amps with 4 wires (2 red, 2 black) attached to the black part of the 'box'. The plug comes from the harness that passes near it and then are passed into the box. They're heavier gauge, so I assumed that maybe they're the power wires, but there's no power on them, and two are grounds.
Any ideas or pointers?
Last week, the rear amps shut off. All 4 channels still work for the tweeters, but that's it.
Nothing changed, but I checked the plugs in the back of the stereo, that's all good.
I checked all the fuses under the hood and they're all good. I checked all the fuses under the dash, all good.
On each amp in the trunk there are two plugs, one with 8 wires (guessing for the speakers) and one with 3 wires (guessing power, ground, and remote). With key on and radio on, I tested the three wires with my volt meter. When grounded to one wire in the plug, the other two got 11.4v and 6.4v, and it was the same on each amp.
Now, there's a plug directly in between the two amps with 4 wires (2 red, 2 black) attached to the black part of the 'box'. The plug comes from the harness that passes near it and then are passed into the box. They're heavier gauge, so I assumed that maybe they're the power wires, but there's no power on them, and two are grounds.
Any ideas or pointers?