electrical issue

[Steve Janz]

Good day...

For information, I have a 1988 FJ62 with a 3B swap (out of a 1985 BJ60). Of late I've had intermitent issues with my headlights and heater fan control switch. From time to time when I turn on the heater fan switch, there's absolutely nothing... except that there's some sort of power outage and my digital clock is reset to 12:00. I turn off the fan switch, turn on the headlight switch and then the fan switch again - BINGO - everything works. Today, both the light switch and the heater fan switch both stopped working. When I turn either of them on, there's a strange buzz coming from one of the relays under the dash. Wondering if anybody has had an issue like this?

Thanks to all who might have an idea here... I really don't want to tear the dash all apart to look for a potential ground wire not connected properly... I'll do what I have to do though.

Thanks!

 

[ToyotaDon]

The buzzing may be from an automatic reset circuit breaker. I'm not sure if any of those circuits used CBs, but it would be smaller than a relay and only have 2 prongs, like a fuse. Like a fuse, it's for circuit protection, so if it's tripping, you need to be looking for a short to ground in those circuits.

Hope that helps.

 

[rchalmers3]

When I'm chasing gremlins it's almost always poor grounds. I replied to your identical post in the diesel section.

Rick