Need help sensor on master cylinder

[Coalman]

I have a m35a3 Can somebody tell me what the senor on the Master cylinder(the one next to the fuel tank ) does Mine blew apart I put a plug in it and everything seems fine

 

[FormerNewMVGuy]

Well i dont have an A3, but it sounds like your stop light switch.......

 

[rlwm211]

TM 9-2320-386-24P page 238 item c referenced specifically in DWG 61 item 5

2540-00-789-6192 19207 11602160 SWITCH,STOPLIGHT

TMs available at www.jatonkam35s.com

RL

 

[Coalman]

I went to that site and can't find anything Can somebody point me in the right direction

 

[Coalman]

I have a question everything thing on the truck works fine including the brake lights I did disconnect the the switch and just plugged it up If that is the brake switch why are my brake lights still working ??

 

[rlwm211]

Unless I am mistaken, the fuel tank is on the passenge3r side and the air tanks are on the driver's side.

It is entirely possible you had two switches installed one on each airpack. A picture would definitely clear some of this up.

RL

 

[Coalman]

I did find the part in the manual and it is definitly the brake switch and my brake lights are working Do I need 2 switches or can I leave the one plugged and just use the other one ?? Also where is the best place to purchase Thanks Kevin

 

[rlwm211]

One switch is enough. Must be they put switches on all air packs to make sure they always have one on the spare they install in the field.

RL