Help...no brake lights but the switch works

Discussion in 'Lighting & Illumination' started by rockusaf, Dec 26, 2016.

  1. rockusaf

    rockusaf Whiskey Tango Foxtrot

    Posts:
    2
    Likes Received:
    0
    Joined:
    May 3, 2014
    Location:
    USA
    I have a lot going on with my truck right now with an LS3/Tremec 6 speed swap and 1998 dash install (truck is a 1991), making progress but I need some help with the brake lights. I pulled the mount and brake pedal with the dash and put in a new brake light switch but got no brake lights when I push the pedal (turn signals, parking lights and hazards work).

    If I reach under the dash and push on the switch towards where the stud from the pedal goes through it the lights will come on so I know everything is wired up correctly and the switch itself is working but I can't figure out how the switch works normally. Looking at the switch I can see the metal piece offset in the hole and understand how it's supposed to be pushed back to turn the lights on but don't get how that happens when it's mounted in the truck, can anyone explain how the switch doesn't just move with the rod it's clipped on and how it's activated?

    Am I missing something other than the rod going to the brake booster, the switch and the clip that holds the switch on there? I still have the 1991 brake booster but from what I can see there's no difference in thin the rods for a 1998, could this be the problem? I can't get the truck on the road without brakes so any ideas are appreciated.

    Thanks a lot,
    Rock
     
  2. rockusaf

    rockusaf Whiskey Tango Foxtrot

    Posts:
    2
    Likes Received:
    0
    Joined:
    May 3, 2014
    Location:
    USA

    Well I've done a bunch of searching and not finding much, pulled the brake switch off to see how far that metal lever needed to move and it's got to be pushed quite a bit to work, just about all the way to even with the plastic housing. If I stick a screwdriver in the hole and push on the lever the brake lights come on so I know everything from the switch back works as designed. It's just the interface between the stud on the brake pedal and this switch. The hole looks like it's elongated so the stud needs to move while the brake switch stay put and I don't see how that happens.

    Any ideas or thoughts would be appreciated, can't drive the truck without brake lights.

    Rock
     

Share This Page