brake sensor

I am trying to locate my brake sensor switch. I have all the wires hooked to my turn signal switch.

Also I found an item off of the master cylinder that looks to be the area that you put the wires for the brake lights. Can not figure how to hook them up. I have a 68 cj5. Could anyone send some pictures. Also if you have no pictures could you please try and explain how to hook up the wires to the switch.

thanks,

 

On my 67 the original stoplight switch was mounted on the end of the MC. The wires (2) connected to it with bullet connectors. I don't fully understand how the turn signal works. I do know that the stoplight switch is wired into the turn signal circuit so that the turn signal can interrupt the power to the lights to make them flash. Get a factory service manual and stare at the schematics. Personally I think its magic that makes them work.

 

On my 70, there are 2 brake sensors, there is one inplanted in the line going to the front, it can be seen from the engine compartment on the driver side frame, and the other is nestled on top of the frame right under the gas tank, but sorry, I have absolutly no idea as to how they work other than some type of pressure switch.
(they might have changed it around between 68 and 70 though, I know they switched to dual cylinders in that time, the switch may have changed too)

 

I was under the assumtion that the brake line pressure switches were stock in 70 model, everything else in my brake system seems to be...

edit: I'm in the middle of rebuilding/replacing my entire brake system

 

Sorry, misunderstood what you said...

 

OK, my '70 is the same. Question, why two pressure switches? Only the front one is hooked up on mine & I've always wondered what the rear one was for. Why have two pressure switches to run the brake lights? What was Jeep's thinking?

 

If your front lines break, you still have the back to stop you AND to let the people behind you know your stopping IMO

 

Here is a shot of the pressure switch on mine. One wire is hot, the other feeds into the turn signal lever.



HTH

 

Sounds plausible to me. I would think that if you lose half your brake system then getting the brakes lights on would be the least of your worries. But I can see where a manufacturer would want to cover their bases.


Speedbuggy - I like that switch with the screw on connector setup. Mine has flat top contacts & the wire connector just slides on. It doesn't make a good connection & only lasts a short time after I clean them. So, my brake lights often do not work . Where could one get the the type of pressure switch shown there? (with the screw on connetors).

 

I got mine at a FLAPS, but it can be found at www.jeepdoc.com as well. It was only a couple of bucks...

 

Thanks everyone, My switch looks exactly like the picture, however screws do not fit in. Also no connecters fit over properly. Trying to figure this out I have one running from turn signal power to brake switch. The other running from brake switch to fuse box. Cannot get it to work, any ideas?

 

You should have 2 wires coming out of you turn signal switch, 1 going to the left rear and one going to the right rear. Those will illuminate both the brake lights and the turn signals, assuming you are using the same lights to do both. Do you have a wiring diagram? Is it an aftermarket switch/lever?

 

Not sure what those connectors look like on your brake switch, but I remember from my reverse light switch, that the terminals on the switch looked like little button head knobs. I had no idea what type of terminal I'd have to use on the wires, but then I figured out that a standard spade terminal when laid flat would slide over the shoulders of the button head terminals. Maybe that's the type of terminals you have too.