Dreaded Purple Wire

[67Bronco Newbie]

I am new so please be gentle. Not sure how to upload a picture so I will describe the best I can. I have a purple wire that is covered in heat protection coming from the firewall into the bronco and it is not connected to anything. It has a round end on it and two clips on either side so it looks like it just snaps into place. Nay help would be greatly appreciated on where this goes. I believe it maybe something to do with the brake sensor but not sure.

 

[Viperwolf1]

It goes to the brake imbalance switch at the distribution block.

 

[67Bronco Newbie]

Thanks. Next question. What is that.

 

[Viperwolf1]

On a dual hydraulic brake system like on 67-77 Broncos, the switch closes and illuminates the warning light on the dash if there is a pressure difference between the front and rear brake circuits. That pressure difference is a bad thing.

 

[67Bronco Newbie]

So the end with the clip hooks into the instrument panel. Somewhere I assume

 

[Broncomt]

So the end with the clip hooks into the instrument panel. Somewhere I assume

No, it faster into a switch on a block under the master cylinder under the hood. Should go straight down.

 

[67Bronco Newbie]

Where does the other end hook in after it comes through the firewall into the cab

 

[75MIKE]

The little red light on your dash next to your ignition switch and one wire on your ignition switch.

 

[67Bronco Newbie]

Thanks all. I will check it out this weekend.

 

[OX1]

Thanks all. I will check it out this weekend.

Do you have stock proportioning valve?

 

[67Bronco Newbie]

not sure what that is. Anyway i still cant find where this purple wire hooks in once inside the cab.