Power Brakes done, brake lights always on - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Irishpilot · 09-09-2008, 05:22 PM

All,

I read the instructions on the manual to power brake upgrade in the FAQs, but it didn't mention having to do anything with the brake lights. What I did was remove the brake master from the firewall, bolted the booster and bracket assembly to the firewall, hooked up the new power brake rod to the pedal and bracket.

The brakes work great, but the brake lights always stay on. I checked the connector, and it is fully seated on the proportioner. What do I need to do here? Anyone have this problem?

Sinister · 09-09-2008, 05:35 PM

I think the wire going to the proportioning valve is the brake warning light.

Irishpilot · 09-09-2008, 05:41 PM

Alright, that makes sense. I crawled up under the dash and I didn't see anything. I suppose the pedal position has something to do with it as the pedal moves maybe 1/2 as much and it is now positioned closer to the firewall.

PanelDeland · 09-09-2008, 05:46 PM

The brake light switch.You probably need to adjust it.It is held "OFF" by the brake pedal arm.Look and you will see.I'll almost bet you a cold one.

**LockDoc** · 09-09-2008, 06:18 PM

Quote:

Originally Posted by PanelDeland

The brake light switch.You probably need to adjust it.It is held "OFF" by the brake pedal arm.Look and you will see.I'll almost bet you a cold one.

.. I just had the same problem after the same mod and it was the brake light switch. Like Panel said, and it's a bugger to get to....

LockDoc

Irishpilot · 09-09-2008, 06:32 PM

Is the brake light switch up near the backside of the instrument panel? And what's the best way to adjust this?

Andy4639 · 09-09-2008, 06:35 PM

The brake light switch is up over the brake pedal arm. It should be plastic and have a nut on both sides of the mount to adjust it to go off when the pedal is released.

GMCMAX · 09-09-2008, 11:06 PM

It's the white piece with wires from it, the pedal needs to hold the button down to turn the lights off.

09-09-2008, 05:22 PM	#1
Irishpilot Registered User Join Date: Jul 2006 Location: Kunsan AB, South Korea Posts: 187	Power Brakes done, brake lights always on All, I read the instructions on the manual to power brake upgrade in the FAQs, but it didn't mention having to do anything with the brake lights. What I did was remove the brake master from the firewall, bolted the booster and bracket assembly to the firewall, hooked up the new power brake rod to the pedal and bracket. The brakes work great, but the brake lights always stay on. I checked the connector, and it is fully seated on the proportioner. What do I need to do here? Anyone have this problem? __________________ 1971 C-10, 406ci, restoration begun! 406ci sb; zero decked, bored .030, edelbrock aluminum e-tec heads, edelbrock performer RPM intake, comp 268 cam, comp 1.6 pro-magnum roller rockers, MSD street fire HEI, MSD 8.5mm wires, Holley Street demon 770, Hedman LT headers. 10.6:1 compression, Air Ride Tech bags on all 4-corners.

09-09-2008, 05:35 PM	#2
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: Power Brakes done, brake lights always on I think the wire going to the proportioning valve is the brake warning light. __________________ Beat it to fit, Paint it to match...

09-09-2008, 05:41 PM	#3
Irishpilot Registered User Join Date: Jul 2006 Location: Kunsan AB, South Korea Posts: 187	Re: Power Brakes done, brake lights always on Alright, that makes sense. I crawled up under the dash and I didn't see anything. I suppose the pedal position has something to do with it as the pedal moves maybe 1/2 as much and it is now positioned closer to the firewall.

09-09-2008, 05:46 PM	#4
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: Power Brakes done, brake lights always on The brake light switch.You probably need to adjust it.It is held "OFF" by the brake pedal arm.Look and you will see.I'll almost bet you a cold one. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

09-09-2008, 06:32 PM	#6
Irishpilot Registered User Join Date: Jul 2006 Location: Kunsan AB, South Korea Posts: 187	Re: Power Brakes done, brake lights always on Is the brake light switch up near the backside of the instrument panel? And what's the best way to adjust this?

09-09-2008, 06:35 PM	#7
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Power Brakes done, brake lights always on The brake light switch is up over the brake pedal arm. It should be plastic and have a nut on both sides of the mount to adjust it to go off when the pedal is released. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

09-09-2008, 11:06 PM	#8
GMCMAX Active Member Join Date: Jan 2006 Location: Lower Mid-East Ca. Posts: 326	Re: Power Brakes done, brake lights always on It's the white piece with wires from it, the pedal needs to hold the button down to turn the lights off. __________________ Never try to teach a pig to sing; it wastes your time and annoys the pig! Gets More Chicks My lugnuts require more torque than your honda makes! 68 GMC, 4X4 conversion w/73 k20 running gear and springs, 350 4spd, 4.10's, D44 powerlok front, 14BFF govlock rear, 33" tires, lifted 4". Last edited by GMCMAX; 09-09-2008 at 11:11 PM. Reason: more info



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