Trans Brake Issue

[SSDiv6]

Originally Posted by Smitty

Ok guys here's my problem; I have a C-4 Trans with a Dynamic Trans Brake. The trans brake uses a Ledex Solenoid to change fluid flow in the valve body. I recently changed engines and installed a new Harrington Switch from Biondo, replacing the B&M green button. My problem is that when I activate the Harrington switch for some reason when the car shifts to 2nd gear it locks the rear wheels. I can disengage the Harrigton switch and cycle the transmission a few times it works correctly via foot braking.
What do you guys think the problem is, I think I am try a B&M Mushroom switch to see if it's the switch.

Smitty, it appears that the switch is staying energized. Do you have an arming switch too? Are you running an MSD box and two-step or line lock that is wired to the transbrake too? If you are, you may need a relay. Need more info on the circuitry.