Recent content by TomServo

  1. T

    Constant Power at 12v UNTIL wired to head unit, then... not 12v. Stereo doesn't work!

    Thanks for the responses and thoughts. I solved the radio wiring issue... it turns out there's a built-in factory amp that when I was wiring to the harness, it was the harness coming from the AMP... so when I snaked out the amp's harness and wired into that instead, everything was working...
  2. T

    Constant Power at 12v UNTIL wired to head unit, then... not 12v. Stereo doesn't work!

    So.... someone else suggested I run a wire directly from the battery just to confirm the head unit was working. Since I had a 12V battery charger just sitting there, I hooked it up and voila! the head unit powered on. A little testing confirmed that the head unit would only power on with power...
  3. T

    Constant Power at 12v UNTIL wired to head unit, then... not 12v. Stereo doesn't work!

    So I checked all the fuses and tried a few things... same result. I will say that the exact power is about 11.4V on the yellow constant wire and 14.3V on the red switched wire... is that changes anything. Tried grounding directly to the chassis, using the harness ground, basically... everything...
  4. T

    Constant Power at 12v UNTIL wired to head unit, then... not 12v. Stereo doesn't work!

    Well, as close as I can tell the only wire in the harness that reads 12v with the ignition off is the yellow one, and it matches up with the yellow on the harness I bought, so.... I think so. It's an older system (97) so there aren't a lot of other wires to choose from. I'll compare with the...
  5. T

    Constant Power at 12v UNTIL wired to head unit, then... not 12v. Stereo doesn't work!

    I thought that, but if the fuse was popped, the yellow constant wouldn't still be reading at 12v, right? And it still is, until I hook it up to the stereo. I can repeat this over and over as many times (and tried with three stereos) as I like, but I don't get power to the head unit.
  6. T

    Constant Power at 12v UNTIL wired to head unit, then... not 12v. Stereo doesn't work!

    Hey, everybody! I've just come into a 1997 Celica GT that I'm trying to fix up for my daughter. It's running perfectly fine, but someone previously tore out the radio (and cut the convertible top, jerks), so I'm trying to put in an aftermarket radio and running into some roadblocks: 1. The...
Top