Brake light help....... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

632bbc · 10-27-2009, 08:41 PM

anybody got an idea where to start looking? I have turn signal markers and running lights on the rear but no brake lights. I checked the bulbs and the fuse. . . could it be a bad stop lamp switch?

Thanks

James McClure · 10-27-2009, 08:52 PM

What year and does it have cruise? Check the switch by shorting out the 2 wires (orange & white) and see if lights come on. Do the 4 way flashers work? If they do, step on the brake and see if they stop flashing. If they do the switch is ok. The brake light circut travels thru the signal light switch. If you short the brake switch and you have power there but no lights out back suspect the signal light switch. I can call you and run you thru it if you want. jim

texasbigbear_wink · 10-27-2009, 08:53 PM

It could be but don't let the bulbs full you they can look fine but still be bad I would just replace them first its a cheep fix and it just may solve your problem.

632bbc · 10-27-2009, 09:10 PM

it's an 81 w/o cruise. . . I just replaced the bulbs. . .but I'll get some new ones and see if it's them. . .
not sure bout the 4 ways. . .I'll check it out in the morning and let you know what I find. . . Thanks

Tx Firefighter · 10-28-2009, 11:58 AM

Take test light and check for power to orange wire at switch. If so, connect orange wire to white wire at switch. Lights should come on.

632bbc · 10-28-2009, 06:05 PM

Quote:

Originally Posted by James McClure

What year and does it have cruise? Check the switch by shorting out the 2 wires (orange & white) and see if lights come on. Do the 4 way flashers work? If they do, step on the brake and see if they stop flashing. If they do the switch is ok. The brake light circut travels thru the signal light switch. If you short the brake switch and you have power there but no lights out back suspect the signal light switch. I can call you and run you thru it if you want. jim

I didn't get to shorting the wires. . did check and the 4 way flashers do not work. . the guy i bought the truck from did a manual to automatic swap and put in a different steering column. .I did look at the brakelamp switch and noticed another set of wires coming off the top along with the orange and white wires. . .from some pics i looked at it looks like it has a stop switch that has cruise. . .could that be my problem since i don't have cruise

James McClure · 10-29-2009, 09:11 AM

632, send your phone number to "jmcclur2@nycap.rr.com". I'll call ya and run you thru the diag. 33 years aa a Chevy mechanic. Takes to long to type it all in. Jim

Damien · 10-29-2009, 11:00 AM

Sounds Like the problem may be in the cab, but you might want to check for broken wires in the rear harness. My dad had a '86 Sub that needed a new harness, because the stock one had gotten so brittle. Every time I touched it another wire broke.

632bbc · 10-29-2009, 10:35 PM

Quote:

Originally Posted by James McClure

632, send your phone number to "jmcclur2@nycap.rr.com". I'll call ya and run you thru the diag. 33 years aa a Chevy mechanic. Takes to long to type it all in. Jim

Ok thanks. . . I'll send it to you. . .

10-27-2009, 08:41 PM	#1
632bbc Registered User Join Date: Nov 2008 Location: Excelsior Springs MO Posts: 24	Brake light help....... anybody got an idea where to start looking? I have turn signal markers and running lights on the rear but no brake lights. I checked the bulbs and the fuse. . . could it be a bad stop lamp switch? Thanks

10-27-2009, 08:52 PM	#2
James McClure One shot, one kill. Join Date: Dec 2007 Location: Saratoga Springs NY Posts: 859	Re: Brake light help....... What year and does it have cruise? Check the switch by shorting out the 2 wires (orange & white) and see if lights come on. Do the 4 way flashers work? If they do, step on the brake and see if they stop flashing. If they do the switch is ok. The brake light circut travels thru the signal light switch. If you short the brake switch and you have power there but no lights out back suspect the signal light switch. I can call you and run you thru it if you want. jim __________________ 1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shotJim or Paladin whichever you choose.

10-27-2009, 08:53 PM	#3
texasbigbear_wink Registered User Join Date: Oct 2009 Location: Texas Ellis county Posts: 134	Re: Brake light help....... It could be but don't let the bulbs full you they can look fine but still be bad I would just replace them first its a cheep fix and it just may solve your problem. __________________ 87 Chevy R10 LB 02 Nissan Sentra GXE

10-27-2009, 09:10 PM	#4
632bbc Registered User Join Date: Nov 2008 Location: Excelsior Springs MO Posts: 24	Re: Brake light help....... it's an 81 w/o cruise. . . I just replaced the bulbs. . .but I'll get some new ones and see if it's them. . . not sure bout the 4 ways. . .I'll check it out in the morning and let you know what I find. . . Thanks Last edited by 632bbc; 10-27-2009 at 09:13 PM.

10-28-2009, 11:58 AM	#5
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Brake light help....... Take test light and check for power to orange wire at switch. If so, connect orange wire to white wire at switch. Lights should come on. __________________ I'm on the Instagram- @Gearhead_Kevin

10-29-2009, 09:11 AM	#7
James McClure One shot, one kill. Join Date: Dec 2007 Location: Saratoga Springs NY Posts: 859	Re: Brake light help....... 632, send your phone number to "jmcclur2@nycap.rr.com". I'll call ya and run you thru the diag. 33 years aa a Chevy mechanic. Takes to long to type it all in. Jim __________________ 1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shotJim or Paladin whichever you choose.

10-29-2009, 11:00 AM	#8
Damien Registered User Join Date: Mar 2007 Location: Farmington, MN Posts: 928	Re: Brake light help....... Sounds Like the problem may be in the cab, but you might want to check for broken wires in the rear harness. My dad had a '86 Sub that needed a new harness, because the stock one had gotten so brittle. Every time I touched it another wire broke. __________________ I can still count my vehicles on two... wait three hands.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.