I recently swapped out the 4l60e to a th400 with a full manual reverse valve body. for the shifter i got a hurst pistol grip shifter with a button on top which i wired to activate the transbrake. with key to accessory on but not started i press the button on the shifter in park and hear the transbrake engage and disengage. i shift to other gears and press the button i hear it it engage/disengage again. is it supposed to do that? im concerned that i may accidentally bump and press the button while driving and cruising. did i miss a wiring step?

 

You just wired a button to a solenoid...it'll work anytime it has power to the button

If you didn't put any type of interrupt in the circuit...why would you expect it to do any different?

Yes it will be able to activate the transbrake while moving even...depending on the valve body the effect that may have can vary.

 

thanks maroon, just needed verification if i missed something with the wiring or if this is how it is supposed to be setup.

 

It is functioning correctly with respect to how you wired it up.
How you wired it up isn’t exactly a good and safe way to have done it. It’s a good idea to have something that prevents the brake from engaging when you don’t want it to.

 

true. what is the proper way to have it wired please?

 

mine is controlled by my ecu and it has a lockout to keep it from triggering above a certain driveshaft rpm.

 

If you have stock ECU there isn't a great way to prevent accidental button press

My recommendation would be a valve body that engages reverse without the need for the transbrake solenoid
Then a simple lockout toggle switch that is just like an arming switch so that during normal use you have an interrupt

This is just the nature of high performance stuff...it requires care and special driving habbits/training