gauge lights 70 GMC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kevmic28 · 12-02-2009, 08:47 PM

Some of my lights dont work. The speedo light does and one of the fuel lights does but the rest dont including my left turn light. I have pulled all the bulbs and checked them.. Whats my next step? Replace the wire board on the back of the gauges? I started to pull the dash panel off yesterday but decided to wait since the weather dropped and my only other vehicle is my Harley.

Sammy · 12-02-2009, 08:56 PM

If the bulbs were good when you checked them. You could try cleaning the contacts on the holders. I used some fine emery cloth to insure good contact. If you can see the circuit and it has some built up crud you might try a pencil eraser to brighten it up. I would try that before I replaced the circuit board.

kevmic28 · 12-02-2009, 09:40 PM

Ok Ill try that this weekend when I have enough time to pull it apart.

cdowns · 12-02-2009, 10:15 PM

if you're going to b pulling them out to clean i'd just change out the bulbs too i've found new brighter than 40yo ones

kevmic28 · 12-02-2009, 10:49 PM

I might do that. At 4 bucks for two bulbs changing them all will get kinda expensive.

OARNGESI · 12-03-2009, 12:17 AM

Wow thats pretty high i think mine was like 5$ for a box of 10 or 12 not sure pm me if you need some i got some extras ill give you

kevmic28 · 12-03-2009, 12:26 AM

I got them at Advanced Auto. I think I will do some shopping around to find a better price then.

JimKshortstep4x4 · 12-03-2009, 09:43 AM

When you have the sockets out check them with the bulbs in them with an ohm meter. I have run into bad sockets that don't work even with new bulbs.

Jim

kevmic28 · 12-03-2009, 10:42 AM

Im toying with the idea of taking it apart and painting the gauges and needles and installing some leds.

kevmic28 · 12-03-2009, 10:54 AM

http://www.thehoffmangroup.com/auror...e.php?gauge=93
This would look sweet in the dash.

DZL1 · 12-03-2009, 11:28 AM

Kevmic check out this thread:

http://67-72chevytrucks.com/vboard/s...inting+needles

I just did it to mine and am very happy the way it turned out. Also, i now that someone mentioned about taking very fine sandpaper and sanding the traces on circuit paper. I had to do that. I went out and bought 6 new bulbs and it turned out that i only had 2 bulbs that were blown. The sockets were the problem. What I did to fix that was sand them as well. There are 2 tabs that actually make the contact with the circuit paper, I sanded those. I also sanded the inside where the actual bulb makes contact with the socket tabs. Good luck. Hope this helps.

DZL1.

12-02-2009, 08:47 PM	#1
kevmic28 Registered User Join Date: Jun 2009 Location: Arlington Texas Posts: 602	gauge lights 70 GMC Some of my lights dont work. The speedo light does and one of the fuel lights does but the rest dont including my left turn light. I have pulled all the bulbs and checked them.. Whats my next step? Replace the wire board on the back of the gauges? I started to pull the dash panel off yesterday but decided to wait since the weather dropped and my only other vehicle is my Harley. __________________ 1970 GMC truck 1988 Harley 1200 Sportster

12-02-2009, 08:56 PM	#2
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: gauge lights 70 GMC If the bulbs were good when you checked them. You could try cleaning the contacts on the holders. I used some fine emery cloth to insure good contact. If you can see the circuit and it has some built up crud you might try a pencil eraser to brighten it up. I would try that before I replaced the circuit board. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

12-02-2009, 09:40 PM	#3
kevmic28 Registered User Join Date: Jun 2009 Location: Arlington Texas Posts: 602	Re: gauge lights 70 GMC Ok Ill try that this weekend when I have enough time to pull it apart. __________________ 1970 GMC truck 1988 Harley 1200 Sportster

12-02-2009, 10:15 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: gauge lights 70 GMC if you're going to b pulling them out to clean i'd just change out the bulbs too i've found new brighter than 40yo ones __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

12-02-2009, 10:49 PM	#5
kevmic28 Registered User Join Date: Jun 2009 Location: Arlington Texas Posts: 602	Re: gauge lights 70 GMC I might do that. At 4 bucks for two bulbs changing them all will get kinda expensive. __________________ 1970 GMC truck 1988 Harley 1200 Sportster

12-03-2009, 12:17 AM	#6
OARNGESI Registered User Join Date: Sep 2008 Location: CASA GRANDE AZ Posts: 4,276	Re: gauge lights 70 GMC Wow thats pretty high i think mine was like 5$ for a box of 10 or 12 not sure pm me if you need some i got some extras ill give you __________________ 70 SWB STEPSIDE 70 BLAZER 09 challenger

12-03-2009, 12:26 AM	#7
kevmic28 Registered User Join Date: Jun 2009 Location: Arlington Texas Posts: 602	Re: gauge lights 70 GMC I got them at Advanced Auto. I think I will do some shopping around to find a better price then. __________________ 1970 GMC truck 1988 Harley 1200 Sportster

12-03-2009, 09:43 AM	#8
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: gauge lights 70 GMC When you have the sockets out check them with the bulbs in them with an ohm meter. I have run into bad sockets that don't work even with new bulbs. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

12-03-2009, 10:42 AM	#9
kevmic28 Registered User Join Date: Jun 2009 Location: Arlington Texas Posts: 602	Re: gauge lights 70 GMC Im toying with the idea of taking it apart and painting the gauges and needles and installing some leds. __________________ 1970 GMC truck 1988 Harley 1200 Sportster

12-03-2009, 10:54 AM	#10
kevmic28 Registered User Join Date: Jun 2009 Location: Arlington Texas Posts: 602	Re: gauge lights 70 GMC http://www.thehoffmangroup.com/auror...e.php?gauge=93 This would look sweet in the dash. Attached Images __________________ 1970 GMC truck 1988 Harley 1200 Sportster Last edited by kevmic28; 12-03-2009 at 10:55 AM.

12-03-2009, 11:28 AM	#11
DZL1 One day..... Join Date: Aug 2008 Location: Ocala, FL. Posts: 702	Re: gauge lights 70 GMC Kevmic check out this thread: http://67-72chevytrucks.com/vboard/s...inting+needles I just did it to mine and am very happy the way it turned out. Also, i now that someone mentioned about taking very fine sandpaper and sanding the traces on circuit paper. I had to do that. I went out and bought 6 new bulbs and it turned out that i only had 2 bulbs that were blown. The sockets were the problem. What I did to fix that was sand them as well. There are 2 tabs that actually make the contact with the circuit paper, I sanded those. I also sanded the inside where the actual bulb makes contact with the socket tabs. Good luck. Hope this helps. DZL1.

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