why no brake lights

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Dec 14, 2007 | 03:13 PM

stm250

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From: Wisconsin

why no brake lights

Hey yall I have an 89f250hd and I have noticed that my brake lights do not come on until I brake hard I have had my wife follow me and let me know that an also I have trailer brake controller that lights up when I brake and that light doesnt come on until I brake hard also so what to do now?? Thanks in advance -Scot-

Dec 14, 2007 | 03:18 PM

tjc transport

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From: Marlboro Mental Hospital.

you need to adjust your brake light switch on the pedal.

Dec 14, 2007 | 03:34 PM

Virto

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From: Des Plaines, Illinois

Yep, that's all it is. I need to adjust mine a bit too. I can sit at a light with the brakes barely on and get no lights. I usually just push a tad harder to make sure they stay on. Too much snow and ice on the ground for me to mess with it...I prefer to be warm, plus I'm lazy.

Dec 14, 2007 | 04:17 PM

quicklook2

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From: Lakewood, Ohio

or it may need replacement.

Dec 14, 2007 | 05:36 PM

stm250

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From: Wisconsin

Quote:

Originally Posted by tjc transport

you need to adjust your brake light switch on the pedal.

How do I adjust that any help is appreciated thanks for the quick replies I knew I could count on yall -Scot-

Jan 23, 2009 | 07:14 AM

zippydodog

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I'd like to know how to adjust it also. I've searched everywhere on the forum, and everyone just says: "adjust your switch" but nobody explains how.

Jan 23, 2009 | 08:20 AM

tjc transport

i ain't rite

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From: Marlboro Mental Hospital.

Quote:

Originally Posted by stm250

How do I adjust that any help is appreciated thanks for the quick replies I knew I could count on yall -Scot-

sorry. somehow i missed this question till todays post.
i was wrong. on these trucks the switch is nonadjustable. you replace it.
there is no real clear description in the manuals on how to replace the switch.
it is on the top of the brake pedal arm, where the master cylinder push rod is. remove the push pin clip, unplug the wires, remove the switch, and put the new one in.