 Brake Light Switch, Adjustment? |
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| StarBear |
 Sep 30 2022, 05:07 PM
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#1
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Senior Member  Group: Members Posts: 1,886 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States 
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Today I noticed that my brake lights don't come on until the pedal is maybe 3/4 depressed, maybe more. It seems from the thread below and comment that maybe I just need to adjust the switch to be activated with less brake pedal travel? The switch is original.
Also, anything else in there I should be replacing so long as I have it opened up? Maybe even replacing the 50-year old switch? 74 1.8L Thanks! http://www.914world.com/bbs2/index.php?showtopic=338714 Post #9: "...The brake switch only makes contact and closes the circuit when it reaches the absolute end of stroke, which is set using the locknut/screw on the switch, I have mine adjusted so that the washer pulls away from the switch arm and actuates the lights just the tiniest bit before I start to feel any resistance from the brake pedal." |
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| bdstone914 |
Oct 1 2022, 08:55 AM
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bdstone914 Group: Members Posts: 4,522 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(StarBear @ Sep 30 2022, 04:07 PM)  Today I noticed that my brake lights don't come on until the pedal is maybe 3/4 depressed, maybe more. It seems from the thread below and comment that maybe I just need to adjust the switch to be activated with less brake pedal travel? The switch is original. Also, anything else in there I should be replacing so long as I have it opened up? Maybe even replacing the 50-year old switch? 74 1.8L Thanks! http://www.914world.com/bbs2/index.php?showtopic=338714 Post #9: "...The brake switch only makes contact and closes the circuit when it reaches the absolute end of stroke, which is set using the locknut/screw on the switch, I have mine adjusted so that the washer pulls away from the switch arm and actuates the lights just the tiniest bit before I start to feel any resistance from the brake pedal." @StarBear That is not correct that the switch does not close until the end of the stoke. Adjustment of the switch changes the range of the swing. I adjust them to cl oi se at about 1-1/2" of brake pedal travel. Adjusting the switch while installed is near impossible. Remove the pedal board and instect the switch. They can break at the tabs. I have onl seen one fail electrically out of all the pedal sets i have restored. The switch has a 7mm jam nut on the adjustme screw. To make the switch close sooner turn the screw inward. Normally about 3-4 threads should show above the jam nut. If you do get a new switch they are way out of adjustment. If you dont have a helper to watch for the brake light activation hook up a volt meter set for resistance accross the terminals of the switch. The switch is closed when resistance is 0. On a side note it should not take the pedal depressd 3/4 of the way for the brakes to engage. Maybe the venting clearance on the rear calipers is off? |
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Posts in this topic
StarBear Brake Light Switch Sep 30 2022, 05:07 PM
Mikey914 Look on the brake pedal. You’ll see the switch. ... Sep 30 2022, 09:56 PM
StarBear
[quote name='StarBear' post='3033483' date='Sep 3... Oct 1 2022, 09:08 AM jim_hoyland Thanks for that tip; I just did the adjustment. Oct 1 2022, 09:47 AM |
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