What is this and where does it go? - Please help!

[familymopar]

Ok, in trying to figure out why my high beams work but my low beams don't I found this hanging wire.  It was hanging down right below my driver side torsion bar but I am pretty sure it just fell through from up top.  The wire leads in to the bundle of headlamp wires and goes to the bulkhead connector with those wires.  It i not long enough to go very far.  It is a black wire with a 90 degree cap and has a single pin female connector inside.  I am guessing for now that this may be the source of my frustration, but I can not figure out where it goes (or what it is for sure).  See pics.  Any help appreciated!!!

[Charger-Bodie]

Brake pressure switch. Follow the brake lines down from the master, should be a place to plug it in on the valve.

[Indygenerallee]

Yep switch is right on the proportioning valve

[familymopar]

Thanks guys!  That makes sense as it was hanging right near the proportioning valve.  And that is what I originally thought but it didn't seem to fit.  So I figured it must go somewhere else.  See that split in the 90 degree sleeve in the original pics?  That is from my trying to get it back on the proportioning valve. And when you have a light problem, and you find a loose wire hanging that comes from the lights on the bulkhead connector, you can jump to conclusions. 

So now a new problem, there are 2 unused "pins" on the proportioning valve.  There is a pin on the end that has a black rubber grommet/diaphragm/sleeve.  I can not et the wire to go on there with or without the rubber sleeve  Then there is a bare pin on top, right in between the rear brake line feed and the front brake line feed.  This is where I tried to cram it because I thought it would fit without the grommet thing.  But then I split the sleeve.

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So now I have gone back out and come back.  I don't see a way that wire connects to the pin on the end with the rubber sleeve/grommet.  I did get it to properly fit the pin on top in between the front and rear brake feed lines.  That is where I figure it should be as I assume it would be the place to pick up on the movement of the inner mechanism that gets shoved one way or the other if you have a front or rear failure.  After plugging it in though, my brake warning light stays on constantly.  I can't imagine there is an issue with the brakes because a) they perform great, and b) I just had them gone through very recently.

So, do I have the right spot I am connecting to?  And, any ideas on why the brake light would be on constant given that the seem to work great and I had them run through not long ago?

The pics are terrible but they are as good as I can get under there.  First pic is the pin on the end with the grommet thing.  Second pic is the pin on top between the front and rear feed lines, this is where I have the wire connected now.

Thanks guys!

[A383Wing]

90 degree wire goes on top of valve with between the lines. If light in dash is always on, then either e-brake switch is out of adjustment, or valve has been pushed one way because of pressure differential in brake system. The pins on either end should be equal out the valve, if one is farther out than normal, you have a braking issue that needs to be fixed

[familymopar]

Thanks to all -

How can I adjust the e brake switch?  I don't think, actually I just hope, it is not the pressure valve as, like I said, I just had the brakes gone through.  So starting with (presumably) easiest step first, any help on how to check/adjust e brake switch?

[familymopar]

And, just so I know for next time, what is the pin on the end with the rubber grommet/sleeve?

[A383Wing]

the pin is the pressure slider inside the valve..if pressure drops in one end f the braking system, the pressure will move the valve inside to close off the low pressure side of the brake lines...you can reset the valve by pushing the brake pedal hard so it moves the valve back to center...you might be able to push it back in with yer finger, but I doubt it. The service manual will explain how this works and how to reset it

and yes, the ebrake switch under the dash is adjustable...rule it out by just unplugging the wire and see if it goes off

[familymopar]

Hmm, I messed with that pin a bit as I was first convinced that was where the plug had to go.  To reset that pn, would I push in or pullout (I think there is a chance I could have pushed it in, no chance I pulled it out).

I will try to depress the brakes hard and see if it makes a difference.  Other wise I will unplug the e brake switch.  If no luck then maybe I am wrong in believing there is nothing actually wrong with the brakes/proportioning valve.

Thank you for the advice!

[familymopar]

Alright I am assuming you mean the push switch that the e brake physically compresses when not engaged.  It is not that.  I also tried depressing the brakes hard for a minute or so and that did not do anything either.

[A383Wing]

the red light in dash is controlled by two different switches, unplug one of the two switches and see which one goes out. Which ever one goes out is your problem...light is on for a reason...again, service manual will explain it better than me

Ebrake switch is on the body of the foot pedal at the kick panel, pull the bullet connector out of the push switch, if light does not go out, then the brake valve at frame rail is the other switch.

unplug the wire from there, if light goes out, then you have a brake issue somewhere...