(800) 853-2651
SHOP NOW

OT- 99 pontiac sunfire headlights

B

bill b va

Member

dau's car headlights don't work . think i have it narrowed down to the microprocessor in the instrument cluster according to the manual . need to know what it looks like and if it can be replaced . i have the insturment cluster removed . thanks bill
 
That would be the first one I seen go bad.Do the daytime running lamps work? High/low beam?
 

daylight running lights don't work . don't have either high or low low beams . daylight runing lights have not worked for about a year . i think it would be helpful if the wiring diagram in the chilton manual i have showed the internal connections for the microprocessor . the diagram only shows power in through the daylight running relay to the drl control (microprocessor) and lo beam input and also to hi beam input .
 
Bill: The daytime running lights will only work when the engine is running and not in park. Have you checked the daytime running light relay in the fuse box? The headlight light switch is a ground switch, which when headlights are on the switch closes the to ground. The GM wiring diagram does not show internal workings of the instrument cluster. Hope this helps
 

thanks . yes that helps . yes i see the light switch is a ground switch . earlier today i checked continunity from the bulb socket back throuh the light switch and got a half scale reading on my analog meter on rx1 . don't know why half scale reading should have been full scale i would think . will check again tomorrow .with the insturment cluster out i shouldn't have any reading through it . the light switch was previously replaced last year for this problem .
 
Check the forward light wire harness. There are two splices in it. One, on a blue wire is likely corroded where it passes under the battery. Check the whole harness along the drivers side fender.
 
(quoted from post at 20:43:14 01/15/10) Check the forward light wire harness. There are two splices in it. One, on a blue wire is likely corroded where it passes under the battery. Check the whole harness along the drivers side fender.
Click to expand...

That is most likely where the problem is, have fixed many of them.
 
You must log in or register to reply here.

Similar threads

EX Deere Farmer
Getting a fuel gauge to work again!!!
Replies
1
Views
209
47fivewindow
47fivewindow
C
John Deere 5460 Forage Harvestor hydrostat leak
Replies
1
Views
370
Cliff Tollini
C
J
Instrument cluster
Replies
2
Views
314
Jim in LA
J
M
1976 Ford 335 questions/problems
Replies
10
Views
317
mhth0727
M
J
Case 580 D shuttle not working
Replies
6
Views
373
Dennis K (WA)
Dennis K (WA)
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top