FJ62 High/Low 12v power split location? (1 Viewer)

[toyotaspeed90]

Having issues with high beams on our 88 FJ62, go figure.

I'm 90% sure I've narrowed it down to, most likely, a wire that's broken or grounded after 12v splits to high/low.

High beams dont work
High beams dont have 12v
The high beam indicator works
The low beams turn off

Here's the interesting part - installed LED lights into the low buckets and in high beam mode, the LEDs turn on very dimly.

If I turn lights/brights on and then supply 12v to the headlight directly to the right high beam (red/blue) the lights flash and the fuse blows.

If there was an issue with the relay or grounding there should be 12v, and if I apply 12v to where it should be it shouldn't blow the fuse.


So, since the low work and they share fuses I would imagine theres a split in the wiring somewhere.

(Checked the blue connector, all looks well. Pulled the steering wheel and the switch seems to be all encased - given that it only switches ground I dont see how that would be the issue - also pulled the relay harness and all looks well on the backside).


Lowbeam headlights installed for thread attention....

 

[toyotaspeed90]

I lied,
12v is there and works.

If I apply ground, they turn on.

I have more research to do, I guess.

Or just install aftermarket relays and larger wiring....

 

[toyotaspeed90]

It was the contacts in the dimmer switch.

Eventually I will still rewire...

 

[88Retired62]

Just picked up on your thread...nice call, it’s the contacts every time.