Differences in brake switches - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tilt · 04-19-2015, 01:11 PM

I posted this question in the electrical section, but thought it might get more attention here. I swapped out the manual brake/clutch pedals for an auto brake pedal and have a question about the brake switch. The original manual pedals had a 2 prong brake switch that had the orange and white wires connected to it. The auto brake pedal has a 4 prong brake switch. The connector with the orange and white wires will fit on the front 2 prongs closest to the firewall, but there is no connector in my harness for the rear 2 prongs. Would those have been for cruise control? If so, since I'm not going to have cruise control for a while, can I just use the old brake switch?

69heavychevy · 04-19-2015, 01:34 PM

You can use your old two prong switch if all you need is for the brake lights to operate.

77c10 · 04-20-2015, 10:13 AM

Use the 2 prongs closest to the firewall, the other two are for cruise control.

Tilt · 04-20-2015, 03:22 PM

Thanks guys. That's what I was hoping to hear.

04-19-2015, 01:11 PM	#1
Tilt Registered User Join Date: Jul 2014 Location: Dayton, TX Posts: 335	Differences in brake switches I posted this question in the electrical section, but thought it might get more attention here. I swapped out the manual brake/clutch pedals for an auto brake pedal and have a question about the brake switch. The original manual pedals had a 2 prong brake switch that had the orange and white wires connected to it. The auto brake pedal has a 4 prong brake switch. The connector with the orange and white wires will fit on the front 2 prongs closest to the firewall, but there is no connector in my harness for the rear 2 prongs. Would those have been for cruise control? If so, since I'm not going to have cruise control for a while, can I just use the old brake switch? __________________ '83 Silverado Step Side '85 GMC short bed. '86 Chevy Step Side Custom Deluxe LQ9/4L80 swap (SOLD)

04-19-2015, 01:34 PM	#2
69heavychevy Registered User Join Date: Jan 2007 Location: Garland,TX Posts: 431	Re: Differences in brake switches You can use your old two prong switch if all you need is for the brake lights to operate. __________________ 80 C10 SWB Step Side - 350 w/ vortec heads, TH350, 12-bolt 3.73

04-20-2015, 10:13 AM	#3
77c10 Registered User Join Date: Aug 2011 Location: Gallatin, TN Posts: 782	Re: Differences in brake switches Use the 2 prongs closest to the firewall, the other two are for cruise control. __________________ 77 C10, 6.0LS/4L80E, 3:73 12 bolt. Boss 338's 20" x 10" w/ 285/50/20 rear. 20" x 8.5" w/ 245/40/20 front. Vintage Air. Full Autometer gauges recessed in factory bezel (Thanks bigblock73!) Gm Storm Grey Metallic paint "Cool ain't ever cheap and cheap ain't ever cool"

04-20-2015, 03:22 PM	#4
Tilt Registered User Join Date: Jul 2014 Location: Dayton, TX Posts: 335	Re: Differences in brake switches Thanks guys. That's what I was hoping to hear. __________________ '83 Silverado Step Side '85 GMC short bed. '86 Chevy Step Side Custom Deluxe LQ9/4L80 swap (SOLD)



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