Emickelsen

I tried the search, I swear I did (maybe I just suck at it), but it would not cooperate and didn't turn up anything useful.

It's an '83. With the power on, and when I turn the headlights off, the headlight motor keeps cycling the headlights up and down. When they reach full down, I can put my hand on it and make it stop. However i am afraid of doing some damage this way. It's like a detent or "stop" is not catching somewhere inside the motor. I have moved the motor a little, only because out of nowhere they would not go all the way up. My low beams were shining a little high, just like high beams. So I adjusted it, and now this happens. I can move it back, but then my low beams are to high again.

I could not find a refrence to a relay in the WSM's. Is the motor just fried, or is there something internal on the motor I can tweek and/or reset?

Thank you for any input.

Fabio421

https://rennlist.com/forums/928-foru...eadlights+stop

https://rennlist.com/forums/928-foru...adlights+cycle

kraabel

Let me know if the video I posted is what you were looking at. I've also heard that a bad switch could cause the same thing. Mine turned out to be easy. The easiest 10 hour fix you can imagine.

sharknoob

My guess is that the plate and contacts needed to be cleaned was your 1st problem now you adjusted it and have 2 problems now.....{If the 83 motor is the same as the 82} only a guess......

Emickelsen

All good stuff, thanks a ton!! Told ya I suck at research, sorry. I tried to cycle the head lights by hand, but it only worked for a couple of times. I'll try the other stuff and let you know what happens. Thanks again for the input.

Emickelsen

Ok, sorry for the long update. Went through everything, twice. Still have the same problem.

-The best I can tell, the '83 does not have a relay for the head lights.

-I took the motor out and took it apart to clean it the best i could. There was some grease on the contact plate, but after cleaning it, it had no effect.

-I tried adjusting the actuator arms all over the place, no change.

The switch is the only thing I haven't addressed yet. However I have trouble believing that is the source of the problem. Correct me if i'm wrong (which i'm sure I am), but the switch just makes the electrical contact to initiate the sequence. The switch would have no direct effect on the operation of the actual motor. It's almost like the motor does not have enough resistance on it to stop it when the current is broken from the contact plate. Momentum carries it through the sequence. Could the little resistors on the motor be bad? Do resistors go bad? Any further suggestions? Thank you.

ACG

I checked the 928 Specialist (www.928gt.com) website. They have a handy relay/fuse reference chart. It lists a relay for the headlight for the 83-84 model:

RELAY XIX-XX
Combination Headlight
928.618.107.02

Good luck in solving your problem!

Emickelsen

Very interesting, Thank you. Man, that's a great web site. Wish I would have known 'bout that befor. Good stuff.

Alan

Yes you most certainly have that relay. it controls the pod raising & lowering and the high low beam switching. It has 3 relays embedded in the dual size can - 1 for the pod motor and 1 for the headlight power switching and one switching between high ans low beam. (If its any consolation S4+ cars have 4 relays in there).
Note: If you swap any relays/motors the pre-'87 and post-'86 versions are different and totally incompatible.

BTW you don't normally adjust the beam aiming by adusting the motor - that was probably a mistake...
(the headlights are individually adjustable - usually even from outside the pods).

Check that the diodes soldered to the motor parking ring are good and well connected - they should conduct electricity in one direction only - use an ohmmeter with the motor unplugged.

Alan

Emickelsen

Thanks Alan, good stuff!! Actually, I wasn't trying to adjust the beam, the head lights were not going all the way up against the stops (or maybe slightly past it and back down a little). The whole pod was facing slightly upward, giving the appearance of having the high beams on.

The diodes appeared fine. I'm going to replace the relay. At least I will be able to eliminate that as the source of the problem. Thanks for the part # Andrew, makes for easy cut/pasting.

Emickelsen

Man, those aren't cheap!! Ordered it anyway.

So are relays fixable? Has anyone had any success with that?

Alan

Some have but usually once they start failing they will continue to deteriorate - can buy some time...

I'd still be checking the motor FB circuit - that seems to be the more likely culprit...

Alan

Emickelsen

Relay changed, it appears to have resolved the problem. Was hoping it would help my fog lights to, but at least I dont have to open the hood to turn the head lights off any more.

Thanks again for all the great input.

Alan

It is quite unrelated to the fog lights... whats the problem with them? there is also a seperate realy for those (much cheaper).

Alan

Emickelsen

They just quit working all together. I was assuming it was the relay for that also. It may be in the wiring to, I just havent got around to tracking it down. Guess I need to make a shopping list @ 928intl.