Dash Cluster Question - Separate Light W/Leads - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Evil Trailblazer SS · 11-01-2011, 08:46 PM

So I feel like a moron because I usually make sure to document or photograph everything as I disassemble, but I screwed up yesterday.

In removing the gauge cluster from my '87 V30 and this little light bulb was plugged into one of the dash warning locations, I am thinking it was the SES light, but I honestly have no clue. It is the only light on its own wire leads (not part of the printed circuit wiring.

Can anyone help me find this little light's home?

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beamn7 · 11-02-2011, 12:59 AM

Pretty sure you are right. My 85 has the same thing....

TheApocalyptican · 11-02-2011, 01:29 AM

Is it maybe the 4x4 light? I know in my Sub, the SES is NOT separately wired, and I thought the 4x4 one was the one with separate wiring.

beamn7 · 11-02-2011, 02:30 AM

That's a good point. It would only be the SES light if you have a seperate indicator between the speedo and fuel gauge at the top of the bezel.... I don't believe the R/V series had that. Pretty sure it was added into the cluster at that point....

b454rat · 11-02-2011, 07:55 AM

Think it's the 4wd indicator.

48cj2a · 11-02-2011, 10:07 AM

Not disagreeing with those that posted but my factory wiring manual says the 4wd indictor lamp circuit has a black and a white wire coming off the T/C switch. Black to the 6 terminal grd buss and white to the bulb socket. The black wire from the bulb socket goes to a "B" hot in accsy start and run in the upper fuse block.

Upon going over the ECM Outputs page it shows a PNK/BLK coming from the Check Engine Lamp Driver Connector with a splice going to the Check Engine Eng LP - but it does not show a lamp on the page.
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Telecasterjoey · 11-02-2011, 10:55 AM

Put her in 4X4 and see if she lights up!

Evil Trailblazer SS · 11-02-2011, 10:57 AM

Quote:

Originally Posted by beamn7

That's a good point. It would only be the SES light if you have a seperate indicator between the speedo and fuel gauge at the top of the bezel.... I don't believe the R/V series had that. Pretty sure it was added into the cluster at that point....

The SES indicator is in the same spot as the older "Choke" indicator. The goofy thing is, all bulb sockets on the cluster have leads on the printed circuit but this stupid little light still remains.

Quote:

Originally Posted by b454rat

Think it's the 4wd indicator.

I did test it by putting the truck into 4WD and the bulb did not activate. I will continue testing once I get the new radiator installed...

Thank you for the responses so far everyone!
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motornut · 11-02-2011, 04:15 PM

it's for the 4X4
i have both my 79 and 88 in front of me and the only socket empty is the 4X4 both
but just check the main harness plug,doubt there would be "wires"leading to the copper path to that spot

Evil Trailblazer SS · 11-02-2011, 05:01 PM

Weird thing is, I've traced all circuits on the copper board and both the SES and the 4WD have leads...there is not dead plugs in the cluster..
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motornut · 11-02-2011, 06:48 PM

SES would light when starting, 4X4 won't tho
and my SES light hole is yellower then the 4X4

flamingbig10 · 11-02-2011, 08:59 PM

turn your dash lights on and see what happens

11-01-2011, 08:46 PM	#1
Evil Trailblazer SS Big Gulps Huh? Whelp... Join Date: Apr 2010 Location: Reno, NV Posts: 410	Dash Cluster Question - Separate Light W/Leads So I feel like a moron because I usually make sure to document or photograph everything as I disassemble, but I screwed up yesterday. In removing the gauge cluster from my '87 V30 and this little light bulb was plugged into one of the dash warning locations, I am thinking it was the SES light, but I honestly have no clue. It is the only light on its own wire leads (not part of the printed circuit wiring. Can anyone help me find this little light's home? Posted via Mobile Device __________________ "The Ghost II" - 1987 V30 CC, 14-BFF (2nd Design Heavy Ribbed HD) SRW Conversion, 454/4L80E/205, 6" Springs, 35" Toyo MT's on 17" Classic II's, Full Audio System, Lot of Other Goodies!

11-02-2011, 12:59 AM	#2
beamn7 Registered User Join Date: Oct 2011 Location: Wildomar, CA Posts: 466	Re: Dash Cluster Question - Separate Light W/Leads Pretty sure you are right. My 85 has the same thing....

11-02-2011, 01:29 AM	#3
TheApocalyptican Registered User Join Date: Jun 2010 Location: Las Vegas, Nv Posts: 312	Re: Dash Cluster Question - Separate Light W/Leads Is it maybe the 4x4 light? I know in my Sub, the SES is NOT separately wired, and I thought the 4x4 one was the one with separate wiring. __________________ 1995 Suburban K2500 454.....off road & towing 1999 Astro, work van 2006 Silverado 2wd 5.3 w/4.5" lift and 33s

11-02-2011, 02:30 AM	#4
beamn7 Registered User Join Date: Oct 2011 Location: Wildomar, CA Posts: 466	Re: Dash Cluster Question - Separate Light W/Leads That's a good point. It would only be the SES light if you have a seperate indicator between the speedo and fuel gauge at the top of the bezel.... I don't believe the R/V series had that. Pretty sure it was added into the cluster at that point....

11-02-2011, 07:55 AM	#5
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Re: Dash Cluster Question - Separate Light W/Leads Think it's the 4wd indicator. __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS

11-02-2011, 10:07 AM	#6
48cj2a Registered User Join Date: Feb 2010 Location: Central, IL Posts: 599	Re: Dash Cluster Question - Separate Light W/Leads Not disagreeing with those that posted but my factory wiring manual says the 4wd indictor lamp circuit has a black and a white wire coming off the T/C switch. Black to the 6 terminal grd buss and white to the bulb socket. The black wire from the bulb socket goes to a "B" hot in accsy start and run in the upper fuse block. Upon going over the ECM Outputs page it shows a PNK/BLK coming from the Check Engine Lamp Driver Connector with a splice going to the Check Engine Eng LP - but it does not show a lamp on the page. Posted via Mobile Device __________________ 03 Suburban Z71 Z71 98 GMC Yukon SLT 4x4 Yukon 86 M1009 CUCV Project Milverado 48 Willys CJ2A 48CJ2A Last edited by 48cj2a; 11-02-2011 at 10:28 AM.

11-02-2011, 10:55 AM	#7
Telecasterjoey Registered User Join Date: Nov 2010 Location: Ottawa ON Posts: 514	Re: Dash Cluster Question - Separate Light W/Leads Put her in 4X4 and see if she lights up!

11-02-2011, 04:15 PM	#9
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: Dash Cluster Question - Separate Light W/Leads it's for the 4X4 i have both my 79 and 88 in front of me and the only socket empty is the 4X4 both but just check the main harness plug,doubt there would be "wires"leading to the copper path to that spot __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350

11-02-2011, 05:01 PM	#10
Evil Trailblazer SS Big Gulps Huh? Whelp... Join Date: Apr 2010 Location: Reno, NV Posts: 410	Re: Dash Cluster Question - Separate Light W/Leads Weird thing is, I've traced all circuits on the copper board and both the SES and the 4WD have leads...there is not dead plugs in the cluster.. Posted via Mobile Device __________________ "The Ghost II" - 1987 V30 CC, 14-BFF (2nd Design Heavy Ribbed HD) SRW Conversion, 454/4L80E/205, 6" Springs, 35" Toyo MT's on 17" Classic II's, Full Audio System, Lot of Other Goodies!

11-02-2011, 06:48 PM	#11
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: Dash Cluster Question - Separate Light W/Leads SES would light when starting, 4X4 won't tho and my SES light hole is yellower then the 4X4 __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 Last edited by motornut; 11-02-2011 at 07:11 PM.

11-02-2011, 08:59 PM	#12
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: Dash Cluster Question - Separate Light W/Leads turn your dash lights on and see what happens __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

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