Where foes this wire hook up or what is it for on brake prop valve
 

Can someone tell me dhat this wire does and where to hook it up or what to hook it to
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Re: Where foes this wire hook up or what is it for on brake prop valve
 

That's the brake warning light in the dash. If you lose a brake line there is a piston in the proportioning valve that slides completes the circuit to ground and turns the light on in the bottom of the fuel gauge

Re: Where foes this wire hook up or what is it for on brake prop valve
 

i believe its a light brown or tan wire coming from the bulkhead connector

Re: Where foes this wire hook up or what is it for on brake prop valve
 

Thank you. Learn something every day. Appreciate the help.

Re: Where foes this wire hook up or what is it for on brake prop valve
 

That is the GROUND wire to the brake warning light, just so you understand it's function.

Re: Where foes this wire hook up or what is it for on brake prop valve
 

You probably should ditch the brass combo valve. The brass ones are notorious for leaking under that rubber cap at the front.