The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-27-2002, 09:05 PM   #1
COBALT
Senior Member
 
COBALT's Avatar
 
Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
Question High beams don't work...

My high-beams have never worked on this truck. Since I've been checking out the front harness I've decided to try and fix them.

When I hit the floor switch while my headlights are on they simply go out. No high beams. Fuse is ok, so what circuit in the front harness is dedicated to high beams?

Please don't tell me it's the headlight bulbs themselves...

------------------
'69 3/4 ton C20 2wd w/ 350ci/400THM and a wood bed!
'69 3/4 ton Custom 20 2wd w/ ORIGINAL 350ci/4sp Manual and a wood bed (parts beast).
Seattle, WA.

*See pics of my trucks and project at www.webshots.com!
__________________
'69 3/4 ton C20 2wd-350ci/TH400
'69 3/4 ton Custom 20 2wd-350ci/4sp Manual
'99 2wd 5.7 Chevy Tahoe
Seattle, WA.
COBALT is offline   Reply With Quote
Old 04-27-2002, 09:07 PM   #2
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
Post

It could be the bulbs...but I suspect the switch. Lots of abuse and moisture there. Could also be corroded connectionat the switch.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio


Longhorn Man is offline   Reply With Quote
Old 04-27-2002, 09:10 PM   #3
COBALT
Senior Member
 
COBALT's Avatar
 
Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
Post

Hmmm...oh yeah. Forgot about the whole "my cab floor is about to rot through" bit. hehe

I'll check the switch for power at both sides on and off....

------------------
'69 3/4 ton C20 2wd w/ 350ci/400THM and a wood bed!
'69 3/4 ton Custom 20 2wd w/ ORIGINAL 350ci/4sp Manual and a wood bed (parts beast).
Seattle, WA.

*See pics of my trucks and project at www.webshots.com!
__________________
'69 3/4 ton C20 2wd-350ci/TH400
'69 3/4 ton Custom 20 2wd-350ci/4sp Manual
'99 2wd 5.7 Chevy Tahoe
Seattle, WA.
COBALT is offline   Reply With Quote
Old 04-28-2002, 10:04 AM   #4
Erl
Registered User
 
Erl's Avatar
 
Join Date: Mar 2002
Location: Dallas, TX
Posts: 555
Post

Try replacing the dimmer switch and the connector that attaches to it. I think Chevy Duty has both the switch and connector. Let me know if that fixes it.
__________________
1968 GMC 305 V6 3/4 4x4 Stepside
06 Corvette Daily Driver
Dallas TX
Erl is offline   Reply With Quote
Old 04-28-2002, 10:19 AM   #5
Mudder
Registered User
 
Mudder's Avatar
 
Join Date: Feb 2001
Location: East Central, MO
Posts: 11,336
Post

i vote for the dimmer swtich too.

------------------
67 stepside 4x4 Owensville MO mudder67@hotmail.com


Mudder is offline   Reply With Quote
Old 04-28-2002, 10:21 AM   #6
busterwivell
Registered User
 
Join Date: Jan 2002
Location: Sahuarita, AZ USA
Posts: 2,033
Post

I lost both low beams once. grounding strap wasn't tightened up and the car grounded through the bulbs. Wierd but true.
__________________
Bill - Tucson, AZ
47 Chevrolet 2 dr sedan
56 Chevrolet 210 2 dr sedan
66 Chevrolet Malibu 2 dr 4 speed
71 Chevrolet C30 Longhorn
86 Chevrolet Monte Carlo SS (Sold)
01 Chevrolet Tahoe
IM - BUSTERWIVE@aol.com
busterwivell is offline   Reply With Quote
Reply

Bookmarks


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

Forum Jump


All times are GMT -4. The time now is 05:19 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com