Headlight troubles (1 Viewer)

[lumpy70]

OK, I give up and I am asking for help. My '85 BJ70 (12 Volt) headlights have crapped out.

I am in the process of rewiring them but I'm having problems. The harness has two white wires and one red wire coming off from the headlight on/off high/low beam stalk. When it's off, no continuity between any wires. When on, continuity between all three wires. I don't get it.

Second, on an H4 lamp there are two vertical tabs and one horizontal one. Which one is ground? Which is high or low?

Confused,
Craig.

 

[bigbrowndog]

cheere Craig, on my R/H drive hj75..
high beam..
drivers light, inside contact red and blue & top Red and green are active..outside contact yellow and red is off.
pass side. top r/g is on and outside r/blue is on inside r/green is off.
............
low beam driivers side both bottom contacts are on,, top red/green off.
pass side, both bottom contacts are on top r.green is off.
forgot to mention all our headlights have the same as the h4 setup. cheers

 

[lumpy70]

Thanks for the reply. Trouble is, I am planning on rewiring the whole thing (not the stock configuration) to better handle the H4 lamps and because there is a mystery short somewhere in my harness.

So here is my question, the 3 wires which come off the steering stalk have no continuty when off, then ALL have continuity when on. Infinity ohms when off, 0 ohms when on between all three.

How can I get this to work for me;
http://sightly.net/peter/lola/tech/headlights.jpg

when the switch doesn't seem to do what it should?

Craig.

 

[Turtle]

Craig try this

 

[Diescipel]

Have you checked your headlight (dimmer) relay?

 

[lumpy70]

OK, here is my turn to eat some crow. After finally getting a friend to look at the headlights before I ran a separate switch and bypassed the whole stock system, he looked at it for 5 minutes and fixed it.

It turns out it was the fusible link coming off of the battery that was blown. That's it. Now it's all fixed and back to stock. I didn't even know that that link was for the headlights despite staring at the wiring diagram for hours.

As an electrician, I feel shame. Thanks for the help guys.

Craig.