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But, that is probably just the brake light signal... not a powered brake signal for electric brakes.

Getting the basics, I am not too worried about. Its just that I dont think there is a powered brake signal... just the brake lights. I would think this would be standard on a military truck.

I was just hoping that the military already have a powered brake signal in the military connector.

I have been reading for about 30 min now... and doesnt look too difficult to get a brake signal, running lights and turn signals. But, I am surprised there isnt a powered brake signal for electric brakes already in the factory military trailer plug. Surprised and disappointed.

Thats exactly what I am trying to find... but, not having any luck.

Did you ever go any further with this idea?

This link doesnt work.

Something is wrong for sure! I would fill the master and let it gravity bleed for a bit and see if you get some fluid to the calipers. If you bled the master with the little kit and it worked... meaning that the fluid did come up out of the hoses the kit came with... there is nothing wrong...

Did you bleed the master, or just trying at the wheels. You HAVE to bleed at the master. Most new master cylinders come with a bleed kit. Basically two little plastic adapter that allow you to run a rubber hose from the front and rear reservoir outlets back into the reservoir itself. When...

Yeah... this sums it up. :oops:

Nope, was definitely the master cylinder... as I said above. :grin:

If it was a rusty truck, I would... but there isnt any rust on my truck. :-D

Here is the box of the correct master cylinder that I got. $19.99 from Murray's. Perfect fit and the brakes are now working great again. And here is the text, just in case my photobucket picture disappears. CARDONE Online Home Page is the manufacturer. part number 10-1584

Have you done something stupid lately that is so dumb you have to laugh at yourself? Well... here is mine. I am new to this truck... didnt know the blackout switch was a three way... or at least you have to give a little tug on it to get it back to the on position. :-P All is good. No...

When I go back outside next I will get the info and post it up.

Brakes are good now. It was the master for sure.

So, I flipped the black out switch for the first time... lights went as I expected. Problem.... they will not come back on! Fuses are all good. Gunna have to trace wires.... I hate diagnosing wiring problems. Any suggestions? How about a wiring diagram that shows how the black out...

Brake fluid was definitely low. Time for a master change. I was told there were two different master cylinders in '86 for a K30, diesel, 4wd. And that I had to look at the stamping on it to determine which one it was. Well, the casting didnt match either one.... the stampings were not what...

I'll sell you a set of 406s for $4000. Pinion conversion already done. They are in a crate ready to go right now.

It was dark when this happened and I just parked it for the night. Had been working on things all day and I was burnt out for the day. I will have to look tonight when I get home.