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04-16-2002, 10:34 AM
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#1 |
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Registered User
Join Date: Dec 1999
Location: Bay Point, Ca, USA
Posts: 311
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Electrical Gremlins
Hey Everyone, I have a 72 C20 that has a blinker issue. When the headlights are off everything is normal and works great. But when I turn on the headlights, or even the parking lights the drivers side blinker either blinks very very slow or not at all. The passenger side works fine all the time! I've changed the bulbs, even replaced both headlights (been wanting to upgrade) but nothing seems to work. Any Electrical gurus out there have any ideas?
As always your help is appreciated. Thanks Ken ------------------ Ken Floyd 72 C20 350HO 82 Honda Silverwing 2001 Silverado
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Ken Floyd 72 C20 350HO 82 Honda Silverwing 2001 Silverado |
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04-16-2002, 11:47 AM
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#2 |
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Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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Have you tried a new flasher? Just an Idea.
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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04-16-2002, 12:18 PM
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#3 |
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Registered User
Join Date: Jun 2000
Location: Bismarck, ND
Posts: 4,300
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Sounds like a classic case of "Bad Ground"
------------------ Unrestored 68 C-10 CST. 327 4-Speed. 48,000 miles. Bismarck, ND See My truck and rare 1967 prototype pictures at: http://community.webshots.com/user/toms68cst MSN Messeger: toms68cst@hotmail.com
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Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club. |
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04-16-2002, 02:56 PM
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#4 |
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Registered User
Join Date: Dec 1999
Location: Bay Point, Ca, USA
Posts: 311
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I didn't think flasher because it works just fine when the lights are off.
------------------ Ken Floyd 72 C20 350HO 82 Honda Silverwing 2001 Silverado
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Ken Floyd 72 C20 350HO 82 Honda Silverwing 2001 Silverado |
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04-16-2002, 03:28 PM
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#5 |
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Senior Member
 
Join Date: Dec 2001
Location: Lexington,NC
Posts: 503
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Took me two days to find the bad ground on mine.Ended up being a loose connection on tail light houseing,bolt had came loose.I was having same symtoms but the ground can be anywhere.Good Luck!
------------------ 68 C-10 Custom LWB 307 V8 Three-on-the-tree Lexington,NC davideowens@lexcominc.net [This message has been edited by daveo68 (edited April 16, 2002).]
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68  C-10 Custom LWB307 V8 Lexington,NC davideowens@lexcominc.net God Bless America |
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04-16-2002, 03:40 PM
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#6 |
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So Many Ideas, So Little Money
Join Date: Sep 2001
Location: Marshalltown, IA
Posts: 1,610
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I got the sme problem, thing is, some of my dash lights are not workin but can't seem to find an bad ones, think I need to pull the bezal and look at the circut board.... just look for grounds though huh?? mine it just with the lights on also,...
Bryce
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72 Blazer 3/4 ton running gear 4.10s NP205/TH350 350 4in lift half doors 71 C10 with 454 99 S-10 5.1L SBC 700R4 09 Malibu  Marshalltown, Iowa |
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04-16-2002, 03:57 PM
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#7 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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If you have a dirty ground, the parking light may take all the ground it can handle, and not let the blinker work.
To check this out, pull the amber lens, and just run a wife from the neg post on the battery, and touch it to the light bucket with the headlights on and the blinker on. ------------------ '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 |
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04-16-2002, 06:23 PM
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#8 |
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Registered User
Join Date: Jun 2000
Location: Bismarck, ND
Posts: 4,300
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"and just run a WIFE from the neg post on the battery"
WHICH "HEADLIGHTS" SHOULD LIGHT UP LONGHORNMAIL???? ------------------ Unrestored 68 C-10 CST. 327 4-Speed. 48,000 miles. Bismarck, ND See My truck and rare 1967 prototype pictures at: http://community.webshots.com/user/toms68cst MSN Messeger: toms68cst@hotmail.com
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Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club. |
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04-16-2002, 08:34 PM
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#9 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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I have found that if you run a ground on the back of the dash. There is a small screw under the speedomter that has no cicuit board attached to it, and run a ground wire to it and to a good ground it will keep a lot of those grimlins away. It works for me on my dash.
------------------ Andy 71's Are for ever!!! or 67,68,69,70,72 www.geocities.com/chevy71tpi/main.html] www.picturetrail.com/Andy4639]
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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04-16-2002, 08:41 PM
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#10 |
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"See the U.S.A....."
Join Date: Apr 2002
Location: Richmond TX.
Posts: 269
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I had some strange dash light trouble also
(no dash lights with headlights on ; fuel gauge erratic; etc.) Pulled the main harness from the circuit board and used sandpaper one the prongs and also on the exposed copper of the circuit board where the harness meets. This rermoved some corrosion and all problems solved. ------------------ 1970 short bed fleetside
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1970 short bed fleetside 1949 all origional chevy 3600 1974 camaro Richmond , Texas(just S.W.of Houston) |
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04-16-2002, 09:22 PM
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#11 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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OMG...I HATE having cut fingers...like my typing isn't bad enough already....
------------------ '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 |
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