1991 freightliner fld120 Brake light issues

Csmoke20 · Oct 1, 2021

jamespmack said: ↑

Take the top cover off. Remove center defrost vent, remove pannel under it. 5,6 screws.
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I’ve give that a look tomorrow. Thank you!

lester · Oct 1, 2021

Csmoke20 said: ↑

Just leaking real bad. It’s still has the originalwhite one in it. There isn’t much room for movement behind the cover. I’m going to attempt what what James replied above. Maybe that’ll help.
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Just get a rebuild kit. New O-rings and what not. Lots easier if it's not wore out

jamespmack · Oct 2, 2021

Csmoke20 said: ↑

I’ve give that a look tomorrow. Thank you!
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Np, it will help.

dispatch242 · Apr 9, 2023

Csmoke20 said: ↑

I figured it out. My goodness. Quite simple really. After messing with them darn stubborn switches under the dash. It was probably this the entire time…. It was full of trash ans air wasn’t getting to the switch. Working fine at the moment. Maybe it’ll last a week or so. Lol. View attachment 385506
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Driver95 · May 30, 2024

Csmoke20 said: ↑

I have a 91 Freightliner fld120 all the lights work except for brake lights. I’ve changed the switches even though i didn’t have any leaks. I’m thinking I’m not getting air to the switch. I changed the switch on top of the manifold and when i push the brake I’m still not getting any brake lights. Has anyone dealt with this horrible design that can maybe point me in the right direction here. I’m lost.
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Driver95 · May 30, 2024

Having the same issue on my 95 classic. No air at the manifold port hole for the brake stop switch with pedal depressed. What valve did you clean trash out of at fixed yours ?

Driver95 · May 30, 2024

Csmoke20 said: ↑

I figured it out. My goodness. Quite simple really. After messing with them darn stubborn switches under the dash. It was probably this the entire time…. It was full of trash ans air wasn’t getting to the switch. Working fine at the moment. Maybe it’ll last a week or so. Lol. View attachment 385506
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Driver95 · May 30, 2024

What valve is this ? Im having the same issue with a 95 classic..

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