My headlight switch only turns on lights when in the (last) auto on position.
Nothing ,clearance, parking ,do not illuminate in other positions.
1998 XJ8 It had an HD conversion when I purchased. Transformers and all are wired and strapped in nicely. Problem is on a bright day lights still go out even when adjustment is at maximum. Where would be a place to start looking for the problem. Have thought about covering sensor on mirror with black tape or something.
Thanks.

 

My headlights DON'T work on AUTO -- I was told to check the stalk wiring (turn signal stalk) but decided to just let it go for now. Maybe you have faulty wiring in the stalk?

 

There are a lot of wires going in/out of the stalk. One may have broken at a solder joint. I was going to replace my stalk due to my rear taillights and radio backlights not turning on (odd mix, I know) when the headlights were on. I took the wheel off and the covers over the column and found the broken wire (green in my case). A little resolder and it worked fine.
I'd poke around there a little before you get too far into troubleshooting.