86 K5 marker and dash lights not working - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jblaze · 02-20-2014, 04:29 AM

The headlights, turn signals, and hazard lights work but the marker lights and dash lights will not light up. I replaced the headlight switch and connector. I have pulled every light out and checked grounds.
The guy who owned it before me had cut some wires and I don't know if they have anything to do with it. He cut a yellow,a grey and a brown wires behind the radio and ran the yellow to an after market radio. He also cut a orange and a white wire underneath the dash near the fuse block. The marker lights and dash lights used to work with the old headlight switch when you would pull the rod in between the marker light and headlight section but if it was moved to marker lights or headlights the marker lights and dash lights would go out.
Also the fuel gauge doesn't work and the oil pressure gauge only works sometimes.

motornut · 02-20-2014, 10:29 AM

markers are run from brown @ the light switch
some years have the plug right there,for roof lights
orange/white, there could be for the dome,does it work?
the cluster lights dim through the grey
may need pics....

DBLSPRT68 · 02-20-2014, 01:51 PM

It very well might be the fuse is blown. I had an old dodge that had that happen. It should be marked: lights. Check this first.

mrolds88 · 02-20-2014, 02:03 PM

Orange and white wires should be dome light.

02-20-2014, 04:29 AM	#1
Jblaze Registered User Join Date: Jan 2014 Location: Clinton, NC Posts: 1	86 K5 marker and dash lights not working The headlights, turn signals, and hazard lights work but the marker lights and dash lights will not light up. I replaced the headlight switch and connector. I have pulled every light out and checked grounds. The guy who owned it before me had cut some wires and I don't know if they have anything to do with it. He cut a yellow,a grey and a brown wires behind the radio and ran the yellow to an after market radio. He also cut a orange and a white wire underneath the dash near the fuse block. The marker lights and dash lights used to work with the old headlight switch when you would pull the rod in between the marker light and headlight section but if it was moved to marker lights or headlights the marker lights and dash lights would go out. Also the fuel gauge doesn't work and the oil pressure gauge only works sometimes.

02-20-2014, 10:29 AM	#2
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: 86 K5 marker and dash lights not working markers are run from brown @ the light switch some years have the plug right there,for roof lights orange/white, there could be for the dome,does it work? the cluster lights dim through the grey may need pics.... Attached Images __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350

02-20-2014, 01:51 PM	#3
DBLSPRT68 Registered User Join Date: Nov 2000 Location: Ft. Mill, SC USA Posts: 931	Re: 86 K5 marker and dash lights not working It very well might be the fuse is blown. I had an old dodge that had that happen. It should be marked: lights. Check this first. __________________ PROJECT TRUCK: 1985 SWB C10 Silverado Black/Charcoal, 1990 V2500 Suburban, 2018 Suburban, 2005 GMC 2500HD CCSB, 2014 Toyota Camry SE, HAD.....1968 Camaro RS/SS Family owned since new; 350 3 speed SOLD

02-20-2014, 02:03 PM	#4
mrolds88 Registered User Join Date: Jul 2011 Location: WV Posts: 946	Re: 86 K5 marker and dash lights not working Orange and white wires should be dome light. __________________ 72 GMC C2500 402/Th400 first truck (still have) 77 GMC C3500 CC dually Sold 70 C50 dump truck "Rusty" 87 K10 Suburban Sold 93 K2500 xcab 6.5TD 96 GMC K2500 Suburban 6.5 TD



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