 Brake light switch, Master vs pedal switch |
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| RKramden |
 Feb 28 2026, 11:20 AM
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Newbie  Group: Members Posts: 48 Joined: 26-October 19 From: So. California Member No.: 23,589 Region Association: Southern California  |
Unsuccessful finding prior posts on this, although I'm sure they're there.
Has anyone used a 2 prong pressure switch at the Brake master in lieu of the switch behind the Brake Pedal to control the brake lights? This is Utilized on a lot of cars and the idiot light for low pressure seems a bit overkill. I read Dave's post on Pelican and he noted the only time it ever lit up for him was when he over cooked his fluid racing and the light didn't come on until after his pedal hit the floor......Appreciate any thoughts BTY this is a '74 non-stock with a 3.0 |
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| Superhawk996 |
Feb 28 2026, 11:33 AM
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914 Guru Group: Members Posts: 7,730 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch 
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You are completely misunderstanding what the differential pressure switch is for and how it works.
Not possible to use that switch to control the brake lights. Edit: not trying to be snarky or abrupt. If you’re interested in how it actually works I’ll either lay it out or find a link for you where it was discussed fully. |
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