I'm working on this awesome truck for a family member (might trade them for my Chevy) but atm theres 2 glaring issues

The Blower for the heater isnt working at all. I check the wires and Its got + but the - of the connector isnt grounded so the fan work work. Any ideas?

2nd is the fact the rear brakes lock up MUCH faster then the front when having to stop fast (I nearly flipped the truck today not knowing this when someone pulled into my lane...)

So ya Just wondering if anyone has any ideas to fix these? Thanks!

 

Have you tried connecting the ground?

Start w/ bleeding the system (all 4 corners + master).

 

I mean the plug that goes into the blower motor has no ground, when I test it against the trucks ground is reads infinity on ohms.

 

well if its got infinity ground, theres a short in the wiring, the fuse is blown.

if the fuse is good and thats the only problem i say clip it and ground it to the body some place, ground is ground

how do you flip a truck when the rears are locking before the fronts?

 

Thats what I was thinking of doing.

And you almost flip a truck when the rears lock and the truck fishtails almost sideways at 45mph

 

if the a proportioning valve for the brakes in these trucks?

 

I have no idea


side note I found the problem with the blower, its the switch itself! Luckily Checker can get it. For $150...

 

93hmm...i bet that switch has been used since the mid 80's in other cars but another thing to check, make sure theres not a hidden fuse for the blower motor, some times its on the motor or somewhere in the harness for it.

when they go they can cause the motor to not run in any of the middle speeds, just the lowest and highest

 

Well Idk what I did but the fan seems to work now. its a 4 speed switch and 1 and 2 works but only between 3 and 4 does it work...