problem with back up lights - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dyingdeadman · 10-06-2004, 03:01 AM

i have a problem with my back up lights. they seem to stay on when the headlihts or parking lights are on. weird thing is they dont do it all the time just sometimes after reversing they wont go off, then a little while later they will shut off and not come back on untill i put it in reverse again,but then they will just stay on after putting in drive.

i think there must be a short somewhere, but not sure where to start.

dyingdeadman · 10-07-2004, 02:09 AM

guess no one knows, or understands.

69ChevyLB · 10-07-2004, 02:43 AM

Sounds like a problem with the switch. Have you checked/replaced it?

dyingdeadman · 10-07-2004, 03:08 AM

you mean the head light switch. or is there some sort of switch that tells the backup lights to come on?

chickenwing · 10-07-2004, 10:38 AM

Think the back up lights utilize the neutral safety switch. I have not read up on how to adjust. I'm not at home to check a diagram but I do not remember the reverse lights drawing power from the headlight switch.... http://67-72chevytrucks.com/vboard/s...il+light+wires
Found a post by Cobalt on how to adjust.

BobbyK · 10-07-2004, 11:46 AM

The backup lights are controlled by the neutral saftey switch.

It's located on the steering shaft,just before the firewall,under the dash.

Over time the contacts in the switch do wear and become sloppy.Also the piece in the switch that moves is plastic and can break.

10-06-2004, 03:01 AM	#1
dyingdeadman Registered User Join Date: Aug 2004 Location: san marcos,tx Posts: 266	problem with back up lights i have a problem with my back up lights. they seem to stay on when the headlihts or parking lights are on. weird thing is they dont do it all the time just sometimes after reversing they wont go off, then a little while later they will shut off and not come back on untill i put it in reverse again,but then they will just stay on after putting in drive. i think there must be a short somewhere, but not sure where to start. __________________ 72 GMC sierra 3/4 ton 402 bb 68 GMC 3/4 ton 2010 camaro rs: daily driver

10-07-2004, 02:09 AM	#2
dyingdeadman Registered User Join Date: Aug 2004 Location: san marcos,tx Posts: 266	guess no one knows, or understands. __________________ 72 GMC sierra 3/4 ton 402 bb 68 GMC 3/4 ton 2010 camaro rs: daily driver

10-07-2004, 02:43 AM	#3
69ChevyLB Active Member Join Date: Aug 2004 Location: Canton, OH Posts: 249	bu lights Sounds like a problem with the switch. Have you checked/replaced it? __________________ 69 C10 LWB Project 47 Cushman Scooter Project It is better to have loved and lost than to live with a psycho all your life.

10-07-2004, 03:08 AM	#4
dyingdeadman Registered User Join Date: Aug 2004 Location: san marcos,tx Posts: 266	you mean the head light switch. or is there some sort of switch that tells the backup lights to come on? __________________ 72 GMC sierra 3/4 ton 402 bb 68 GMC 3/4 ton 2010 camaro rs: daily driver

10-07-2004, 10:38 AM	#5
chickenwing Lovin' Life in Miss.! Join Date: Mar 2004 Location: Puckett, Mississippi Posts: 1,937	Think the back up lights utilize the neutral safety switch. I have not read up on how to adjust. I'm not at home to check a diagram but I do not remember the reverse lights drawing power from the headlight switch.... http://67-72chevytrucks.com/vboard/s...il+light+wires Found a post by Cobalt on how to adjust. __________________ The truck... you hear that? No really, you did hear that?!!!

10-07-2004, 11:46 AM	#6
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,772	The backup lights are controlled by the neutral saftey switch. It's located on the steering shaft,just before the firewall,under the dash. Over time the contacts in the switch do wear and become sloppy.Also the piece in the switch that moves is plastic and can break. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

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