Quote Originally Posted by Throw'n $$ away View Post
So if the transbrake was wired in the car initially, or not hooked at all to the ECU now, is there a need to use 554-128?
If the ECU doesn't have an Input signal from the transbrake (not the actual transbrake activation itself), then the ECU doesn't need to be protected from it.

Or is 554-128 only if using the Dominator to control the transbrake power, etc?
Read this: http://forums.holley.com/showthread....9883#post79883 (Related Transbrake Forum Post)