ClassicOldsmobile.com  

Go Back   ClassicOldsmobile.com > Repair & Restoration > Electrical
Sign in using an external account
Register Forgot Password?
Search

Welcome to Classic Oldsmobile Forum!
Welcome to Classic Oldsmobile forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Classic Oldsmobile Forum today!


Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread Display Modes
Old September 9th, 2009, 10:09 AM   #1
Registered User
 
Oldsmobilliam's Avatar
 
Join Date: Sep 2009
Location: Appleton, WI
Posts: 57
Send a message via Yahoo to Oldsmobilliam
Olds Instument cluster light not working

My lights behind the speedo arent working. We replaced the bulbs to no avail. I am thinking it may be the dimmer control on the light switch. The headlights work fine but not the dash lights. Any suggestions would be delightful.
__________________
Oldsmobilliam 98
Oldsmobilliam is offline   Reply With Quote
Old September 9th, 2009, 11:28 AM   #2
Landyacht Club President
 
Olds64's Avatar
 
Join Date: Jul 2007
Location: Lawton, OK
Posts: 7,336
When you replaced the bulbs did you check for 12V coming to the light? If it isn't there then trace it back to the dimmer switch and make sure 12V is going to the dimmer switch. If the dimmer switch doesn't have 12V then you have to figure out why. The easiest thing to start with would be to check all of your fuses.
__________________
1971 Oldsmobile 98
2011 Ford Flex
Olds64 is offline   Reply With Quote
Old September 9th, 2009, 12:12 PM   #3
Moderator
 
Lady72nRob71's Avatar
 
Join Date: Feb 2008
Location: Plano, TX
Posts: 11,583
On some models, the INST LMPS fuse is the one you are seeking.
If the fuses are good, the dimmer switch on the light switch may be bad. Rotating it quickly back and forth may cause them to flicker. If so, replace the switch.
__________________
-Rob Young


1972 Cutlass Supreme Convertible- (442 clone) -"Lady" (My mistress...)
http://www.flickr.com/photos/robsalbum/sets/
Lady's interior makeover Rally Pac stuff
Front end job Underhood resto
1986 Cutlass Supreme Coupe - "Pristine"
1978 Ford Pinto (Old Faithful) a.k.a. "the Tramp" - in the family since new.
1997 Cadillac STS
1999 Harley-Davidson Sportster - "the Freedom Machine"
Lady72nRob71 is offline   Reply With Quote
Old September 9th, 2009, 01:42 PM   #4
Registered User
 
Oldsmobilliam's Avatar
 
Join Date: Sep 2009
Location: Appleton, WI
Posts: 57
Send a message via Yahoo to Oldsmobilliam
I remember it did used to flicker, and for a while there it would come back on with a few moderate slaps to the dash with my hands.

I will try those ideas, sirs.
__________________
Oldsmobilliam 98
Oldsmobilliam is offline   Reply With Quote
Old September 9th, 2009, 06:19 PM   #5
Old(s) Fart
 
joe_padavano's Avatar
 
Join Date: Mar 2007
Location: Northern VA
Posts: 16,168
I have had the rheostat contact in the light switch go bad, so that is a possibility.
__________________
Joe Padavano

62 F-85 Deluxe wagon (the NV desert car)
62 F-85 Deluxe wagon (the San Jose car)
64 Vista Cruiser
64 Jetstar 88 Conv
66 442 L-69 Conv
68 W-30
69 H/O
69 442
70 W-30
72 442
84 Custom Cruiser
86 Caprice wagon (w/307 Olds)
joe_padavano is offline   Reply With Quote
Old September 10th, 2009, 02:23 AM   #6
Certified Fanatic
 
Yellowstatue's Avatar
 
Join Date: Jan 2009
Location: Too close to Toronto!!
Posts: 2,152
Smile Heavy handed

A few moderate slaps with a big hammer would probably work better X2 on changing the switch...my '57 dash lights didn't work either and it was a bad connection at the rivet holding the contacts together inside the switch...
__________________
'57 98 HC; '68 442 M20; '68 442 M21; '68 W30; '68 Vista et al; '81 -'84 Regency et al; '96,'98,'99 Aurora; 03 Bravada..Ignition ON
Yellowstatue is offline   Reply With Quote
Old September 10th, 2009, 04:07 AM   #7
Oldsdruid
 
Join Date: Dec 2007
Location: Southside Vajenya
Posts: 5,157
Quote:
Originally Posted by Oldsmobilliam View Post
I remember it did used to flicker, and for a while there it would come back on with a few moderate slaps to the dash with my hands.

If the INST LPS fuse tests good, check the ground straps behind the dash. There's one that circles the headlight switch and another that surrounds the instrument cluster and radio-HVAC controls area.

Does the dimmer rheostat operate smoothly thru its travel or are there rough spots in it?
__________________
Too many Oldsmobiles that sit way too much.
rocketraider is offline   Reply With Quote
Old September 10th, 2009, 05:43 AM   #8
Landyacht Club President
 
Olds64's Avatar
 
Join Date: Jul 2007
Location: Lawton, OK
Posts: 7,336
I wonder, is this rheostat easy to purchase, or is it a part made of unobtanium?
__________________
1971 Oldsmobile 98
2011 Ford Flex
Olds64 is offline   Reply With Quote
Old September 10th, 2009, 06:30 AM   #9
Oldsdruid
 
Join Date: Dec 2007
Location: Southside Vajenya
Posts: 5,157
It's part of the headlight switch.

For some reason I thought you were talking about a 70-72 A-body car. I see you have an early 80s Ninety Eight. The dash cluster lights seem to be a recurring problem on 77-84 B/C cars; on my CC wagon the right side speedo lighting stays off over half the time but on occasion will light up normally, and sometimes the left side lighting will blink off. I think it's probably a squirrelly connection on the printed circuit behind the cluster. What's really aggravating is the carrier has to come out of the dash to inspect the PC.

By the time you've pulled the speedometer head to access the lamps, it doesn't take much more to remove the carrier.
__________________
Too many Oldsmobiles that sit way too much.
rocketraider is offline   Reply With Quote
Old October 17th, 2009, 06:37 PM   #10
Registered User
 
Oldsmobilliam's Avatar
 
Join Date: Sep 2009
Location: Appleton, WI
Posts: 57
Send a message via Yahoo to Oldsmobilliam
it spins just fine, when i turn it all the way the overhead light comes on.

Quote:
Originally Posted by rocketraider View Post
If the INST LPS fuse tests good, check the ground straps behind the dash. There's one that circles the headlight switch and another that surrounds the instrument cluster and radio-HVAC controls area.

Does the dimmer rheostat operate smoothly thru its travel or are there rough spots in it?
__________________
Oldsmobilliam 98
Oldsmobilliam is offline   Reply With Quote
Old October 21st, 2009, 11:25 AM   #11
Registered User
 
Dan Wirth's Avatar
 
Join Date: Aug 2009
Location: The Southwest
Posts: 470
I agree with Olds64. This should be done first, then isolate trouble further to the switch, if necessary.
__________________
Dan W.
--------------------------------------
1957 Oldsmobile Holiday J2 Rocket/Super 88
2005 Lincoln Town Car
2002 Ford F250 Turbo 7.3L Diesel Pusher
Dan Wirth is offline   Reply With Quote
Old December 1st, 2009, 05:56 AM   #12
Registered User
 
Lovin87olds's Avatar
 
Join Date: Oct 2009
Location: Buffalo, New York
Posts: 23
I have the same problem with my 87 Salon. Although i have not checked the volts coming from the lamp sockets, I did change the bulbs and checked the fuses (fuse's are good). I am going to order the dimmer switch today since im at work lol I did find out that there was a engine compartment fire in the car, funny thing is, is that there are no signs of a fire in it. Maybe the previous owner cleaned it up but nothing i could see gave me a clue that there was, hope none of the wires are melted or burned, I'm not big on electrical stuff.
__________________
'87 Salon
Lovin87olds is offline   Reply With Quote
Old December 1st, 2009, 05:56 AM
ClassicOldsmobile
1957 Oldsmobile




Paid Advertisement
 
 
 
submit to reddit
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
1975-1976 olds 98 instrument cluster carnell71075 Parts Wanted 6 May 1st, 2010 07:37 PM
Brake Indicator Light Not Working nelsontj Electrical 12 September 19th, 2009 04:24 PM
'64 Olds Brake Lights not working black betty Electrical 3 December 21st, 2007 12:13 AM
hard to change inst.cluster to tach cluster? HAFROD Cutlass 1 March 15th, 2007 12:32 AM
running lights not working on 67 Olds 98 <KEN> Electrical 0 September 22nd, 2004 08:39 PM


All times are GMT -7. The time now is 02:04 AM.


Advertising - Privacy Statement - Terms of Service - Jobs
All content Copyright 2008 by Internet Brands, Inc.