Where Does the Purple Wire Go?

[67 Roadster]

I'm trying to put my '67 back together after the body shop tore her apart including the engine bay wire harness which they ripped up painting around it. There is a lone purple wire that comes off the harness by the brake master cylinder with heat insulation on it. I've seen pictures of other Broncos, and it seems to snake down the driver's side wheel well. Mine has been snapped off. Can someone tell me where it connects?

Thanks,

LJ

 

[Oldtimer]

Purple wire, both of them, connect to the brake pressure differential switch on the
H-block on the frame, below master cylinder.

 

[67 Roadster]

Purple wire, both of them, connect to the brake pressure differential switch on the
H-block on the frame, below master cylinder.

Thanks for the information, however mine has only one wire.

 

[Oldtimer]

You are correct. 66-67 had one wire, in 68 they went to two wires.
late 66-67

1968/

 

[Viperwolf1]

I bet '66 had no wires. Only one brake pressure line, so nothing to compare that pressure to.