1968 M35A2 Brake light pressure switch

[WTF D00D]

Sorry guys, I searched but could not find exactly what I was looking for.

It's been many many years since I had to dig in gov TM's and I can't figure it out...lol. The trouble shooting manual said go to chap 7 to see where it is and how to replace the switch, what chap 7? I've dug through everything and I'm missing it.

The simple question is, on a 1968 M35A2, where is the darn switch?...lol

 

[hemichallenger]

The brake light switch is on the master cylinder.
If you are talking about the low air switch it is in the cab on the firewall about the middle.

 

[doghead]

If you have the original fluid pressure switch, it's on the forward end of the air-pack(brake booster).

If you have the upgraded air pressure switch, it is between the air-pack and the tool box(where you step up into the truck).

 

[doghead]

The brake light switch is on the master cylinder.

Wrong answer.

 

[WTF D00D]

Thanks doghead, found it right under the skid plate forward, correct?

Since all other lights are working and if you really push hard you can get a flicker out of the brake lights, this should be my first replacement to try and fix the problem aye?

 

[doghead]

Yes. That's it.

You can simply test it with a meter or test light.

 

[hemichallenger]

Wrong answer.

Yes I should have said look at the master and you will see it.

 

[WTF D00D]

Ordered a new one from Erik's Military and Industrial Surplus - Military Vehicle Parts, Industrial and Military Surplus Electronics.

Also ordered a new 3 level switch since the one in my truck was replaced with a plastic one and I'd rather aluminum...lol...and of course a filter set since I haven't done that yet either. The truck hasn't seen the road since 09 and before that it was a Guard truck so telling if they used it 2 weeks a year or what.