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Author Topic: Brake light swith adjustment  (Read 1551 times)

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Offline macrisel

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Brake light swith adjustment
« on: April 09, 2013, 03:15:37 PM »
So I have my wiring harness in and everything appears to be working.  I did notice one thing though when I was driving around my yard.  My brake light switch is extremely sensitive and will activate the brake lights with just the SLIGHTEST bounce.

Do I need to back my plunger out on the master cylinder a little bit?

Offline garage gnome

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Re: Brake light swith adjustment
« Reply #1 on: April 09, 2013, 05:03:59 PM »
You could have an air bubble in the switch.
Nate in Western MA 1953 3A #3268, The Jalopy, '47 2A Wheelin' rig, '49 3A, #37071, unmolested, bone stock named Ted

Offline calvinhunt

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Re: Brake light swith adjustment
« Reply #2 on: April 10, 2013, 01:56:11 AM »
My brake light switch takes a fair amount of brake fluid pressure to activate it.  If a bump in the road does it I would suspect a short.  
Calvin
Santa Clara, Utah

Offline macrisel

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Re: Brake light swith adjustment
« Reply #3 on: April 15, 2013, 01:00:48 PM »
Thanks guys.  I made it back out the the shop this weekend and had a chance to play with the switch.  Turns out, I did just have to back the rod out of the master cylinder quite a bit.  I had put the new master cylinder on when I only had the chassis finished three years ago.  By the time I added the aftermarket tub (with the firewall angle slightly different), and the draft pads both my clutch and brakes were too tight and had to be backed off.

Imagine my suprise when I tried to pull my jeep out of the shop after a year and it wouldn't move!  The engine started just fine but when you let out on the clutch nothing moved.  After a brief fit (maybe not so brief) I crawled under the jeep and saw the clutch wasn't releasing all the way.. ::)  I readjusted the clutch and all is right with the world.