Wth is this shifty knobby thing? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**mrtoni** · 10-20-2020, 12:34 AM

Anyone?

jarrodblake · 10-20-2020, 12:38 AM

Trailer brake controller I have the same one but different knob.

**Stocker** · 10-20-2020, 12:38 AM

Trailer brake controller

Killer Bee · 10-20-2020, 06:02 AM

that's an OG Kelsey Hayes

72c20customcamper · 10-20-2020, 09:20 AM

Old school type . Hooked up to the master cylinder uses hydraulic pressure to actuate

**Ol Blue K20** · 10-20-2020, 09:25 AM

I agree it's a trailer brake controller

**71CHEVYSHORTBED402** · 10-21-2020, 01:52 PM

I believe mine had the same brake booster. I forgot my truck had one until I saw this. Explains the extra holes in the dash I couldn't account for.

**mrtoni** · 10-21-2020, 02:32 PM

Thanks. Was thinking Kelsey Hayes but didn’t know if they made trailer brakes

hjewell2 · 10-21-2020, 08:10 PM

Quote:

Originally Posted by Stocker

Trailer brake controller

Kelsey Hayes was a major producer of brake equipment. Fruehauf Trailer Corporation was one of our biggest sales . we produced a ton of 4 wheel anti lock for GM from far back as 1986 our plant shut down in 1998

10-20-2020, 12:34 AM	#1
mrtoni Senior Member Join Date: Jan 2009 Location: sparks, nevada Posts: 1,879	Wth is this shifty knobby thing? Anyone? Attached Images

10-20-2020, 12:38 AM	#2
jarrodblake Registered User Join Date: Sep 2017 Location: Patriot IN Posts: 163	Re: Wth is this shifty knobby thing? Trailer brake controller I have the same one but different knob.

10-20-2020, 12:38 AM	#3
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,497	Re: Wth is this shifty knobby thing? Trailer brake controller __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

10-20-2020, 06:02 AM	#4
Killer Bee Registered User Join Date: Jan 2016 Location: Barber City, CA Posts: 4,728	Re: Wth is this shifty knobby thing? that's an OG Kelsey Hayes __________________ *I started out with nothing - and I still have most of it*

10-20-2020, 09:20 AM	#5
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,141	Re: Wth is this shifty knobby thing? Old school type . Hooked up to the master cylinder uses hydraulic pressure to actuate __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.

10-20-2020, 09:25 AM	#6
Ol Blue K20 Proprietor of Dale's Corner Join Date: Nov 2012 Location: Vacaville , CA Posts: 15,834	Re: Wth is this shifty knobby thing? I agree it's a trailer brake controller __________________ "Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man

10-21-2020, 01:52 PM	#7
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,118	Re: Wth is this shifty knobby thing? I believe mine had the same brake booster. I forgot my truck had one until I saw this. Explains the extra holes in the dash I couldn't account for. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

10-21-2020, 02:32 PM	#8
mrtoni Senior Member Join Date: Jan 2009 Location: sparks, nevada Posts: 1,879	Re: Wth is this shifty knobby thing? Thanks. Was thinking Kelsey Hayes but didn’t know if they made trailer brakes



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