Brake lights
01-26-2023, 03:44 PM
Cross-Country
Thread Starter
Join Date: Mar 2010
Posts: 85
Likes: 0
Brake lights
I have gone thru 3 of the pressure switch on the master cylinder. Does anyone have a better alternative than the oe style?
01-26-2023, 04:38 PM
Join Date: Sep 2010
Location: Western NY
Posts: 2,062
Are you using something other than DOT3? Have you try a different supplier? I've use the NAPA SL134 and DOT3 without issue.
01-26-2023, 08:58 PM
Join Date: Feb 2008
Location: Windermere Valley,B.C. Ca
Posts: 2,722
.... or, you could run it into a relay so that then the switch would only have to carry just enough current to trip the relay and the relay would switch the rest of the load.
01-27-2023, 02:57 PM
Join Date: Nov 2001
Location: Cherryville,N.C.
Posts: 893
Likes: 0
Are you by chance using silicone brake fluid?It loves eating up those pressure switches because most of them are not compatible.
01-29-2023, 05:14 AM
Join Date: Apr 2015
Location: Kemptville, ON,
Posts: 1,199
Mine did the same thing. A lot of them do that. I went and got this switch from Summit. Item #rfw-sw68. Don't know why I can't make a link work.
01-29-2023, 07:05 AM
Join Date: Jan 2004
Location: Mendon, Massachusetts
Posts: 1,406
I got a motorcycle style brake switch to replace the unreliable pressure switch, problem solved.
01-29-2023, 08:09 AM
Join Date: Jan 2011
Location: Eastern Kentucky
Posts: 4,750
01-29-2023, 08:53 AM
Join Date: Jul 1997
Location: Beautiful Hueytown Alabam
Posts: 5,668
I used the same one as Effietrucker... went thru 3 pressure switches before I gave up...
01-29-2023, 04:21 PM
Join Date: Oct 1999
Location: Kalispell, MT
Posts: 6,494
Harley-Davidson brake light switch # 72023-51D (made in the USA) This was 20+ years ago.
01-29-2023, 04:31 PM
Join Date: Apr 2010
Location: glenville pa
Posts: 228
Got a switch from auto zone about 4 years ago still working with silicon brake fluid.
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01-26-2023, 03:44 PM
