Misc electrical problems...

[Humble_One]

OK, so this is a stereo replacement gone awry story...on a '94 J30t. It goes something like this... Using a Scoche harness I proceeding to replace the Bose with a Kenwood; in addition to the typical constant and accessory (+), the harness has a separate lead for amp turn on and power antenna as well as 2 separate ground leads. Now being the naive individual that I am, I connected these without checking the validity of scoche's color assignment. Stereo lit up (no sound, as I hadn't attached speaker leads at this point). A few minutes into chasing down speaker and amp power leads the butt-end of the new head unit starts smoking; long story short...I fried the IC in the new deck. After giving up, I replaced the Bose in its native position until I could have the new deck repaired.

Here's the problem...the power antenna doesn't work, the key-fob remotes don't work, the clock doesn't work, and the constant power to the radio is not present, as it 'forgets' the stations and what-not when the key is turned off for a while; it barely bumps the volt-meter from zero. I have appropriate current from accessory and from the deck for power antenna and amp turn on leads. Yes, I rechecked the harness at the head unit; no, there wasn't a lot of tension on the wiring; I cannot reprogram the remotes; yes (I Believe) I've checked all of the fuses...

I'm at a loss, here. Hints or strategies would be greatly appreciated. Is anyone familiar with a common circuit or module that supplies all of these?

[Simmsled]

You're constant power (usually the yellow wire on your new harness) may of been shorted during this process. Many of the accessories that you named could be on a common circuit. I do not have a wiring schematic for the J30. Tell me if your cigarette lighter still works and we can go from there.

[Humble_One]

The cigarette lighter works with the key on, but not otherwise; of course, this is how it's always worked though...

This is definitely a common circuit of sorts, I just don't know where, how, and what it all has in common.

J.

[Humble_One]

OK, so here's the punch line...after a month or so of checking this and that. I finally started in the fuse box and put the meter on each of them one-by-one, as none were visibly damaged. You guessed it...45 min's later, the clock fuse was blown.All is well now; all that remains is my amazement that a 7.5 amp clock fuse is tied around in such a way that it could take out so many other (unrelated) circuits.Anyhow...hope this helps someone.