OK, I've run into this strange problem.. I've got a 96 Corolla and was installing a new headunit. Sadly, I didn't know that I could get a wire harness from Best Buy so I was going through the trouble of figuring out all the wires and splicing them together.
Everything seemed to work except that I couldn't get it to power up both the taillights and the dash lights at the same time. After a while of this problem I found that I could get the harness from Best Buy so I went out and did that. Then I spliced the car's harness back on and plugged everything together. All of a sudden, NOTHING worked. No taillights, no dashlights, the headunit wouldn't even come on...
After a bunch of checking around (and yes I made sure that all the blade fuses were good), I found that the problem seems to be this: no power through the Accessory On wire. The continuous lead works and powers up the radio, but no other wire seems to have electricity going through it, even when the car is on. The console clock also fails to come on now...
Is it possible that I blew one of the big cubic fuses or relays? If so, what one would it be/how do i check? The car still runs fine, the headlights, dome light, AC, break lights, and blinkers work, but no head unit power, no dashlights, no taillights. I'm completely at a loss as to what happened.
