Brake switch question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Russell · 04-19-2005, 03:39 PM

Hey guys!

Does anyone know if someone makes a brake switch for our truck that is normally open?

Aka, it lets voltage through while the brake pedal is NOT being touched, but when you press the pedal down, it stops the current?

I need one for the electronic cruise setup I am retrofitting into my truck

60-66 Nut · 04-19-2005, 07:50 PM

Russell, GM used a switch to disengage the torque convertor lockup when you press the brake. That switch should work like you want.

60-66 Nut

beaterC10 · 04-19-2005, 09:35 PM

What about the brakelight switch for a truck with factory cruise? Actually aren't you describing a normally closed switch? It is closed (lets current pass) until it is moved.

Russell · 04-19-2005, 10:41 PM

BeaterC10, its actually the opposite for some reason... if the switch is just sitting on the table, then it will not apply current unless you hit the switch, then it will allow current. So, while it is in the truck, when the pedal is up, it lets current though, but when the pedal is down, it does not. Complete opposite to the stock brake light switches, which allow current when the pedal is down, but not when it is up.

The factory cruise control used the same type of switch as the brakes did, closed when the pedal is down, open when the pedal is up

Shoulda thought about the TCC switch -- That'll work perfectly

04-19-2005, 03:39 PM	#1
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Brake switch question Hey guys! Does anyone know if someone makes a brake switch for our truck that is normally open? Aka, it lets voltage through while the brake pedal is NOT being touched, but when you press the pedal down, it stops the current? I need one for the electronic cruise setup I am retrofitting into my truck __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

04-19-2005, 07:50 PM	#2
60-66 Nut Professional Beer Tester Join Date: Aug 2004 Location: Louisiana Posts: 453	Russell, GM used a switch to disengage the torque convertor lockup when you press the brake. That switch should work like you want. 60-66 Nut __________________ 60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500

04-19-2005, 10:41 PM	#4
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	BeaterC10, its actually the opposite for some reason... if the switch is just sitting on the table, then it will not apply current unless you hit the switch, then it will allow current. So, while it is in the truck, when the pedal is up, it lets current though, but when the pedal is down, it does not. Complete opposite to the stock brake light switches, which allow current when the pedal is down, but not when it is up. The factory cruise control used the same type of switch as the brakes did, closed when the pedal is down, open when the pedal is up Shoulda thought about the TCC switch -- That'll work perfectly __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) Last edited by Russell; 04-19-2005 at 10:42 PM.

04-19-2005, 09:35 PM	#3
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	What about the brakelight switch for a truck with factory cruise? Actually aren't you describing a normally closed switch? It is closed (lets current pass) until it is moved.



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