JMS Transbrake/MSD 2 Step Wiring

Need some help. Wanting to wire both transbrake and 2 step to down shift on the steering wheel. Found the pin for the down shift at the pcm. It's 12 volts when it not push in and 0 volts when you hold it in. So I know I'm going to need relays and it to be on a switch so when I'm driving it around it not ready to activate. Thanks for help ahead of time.

Here's so far.
Using 5 lead relay and 2 lead toggle switch

5 lead relay
86 battery neg.
87a from pcm down shift paddle pin
87 blue MSD 2 Step
87 to 85
30 to down shift paddle and blue wire JMS Transbrake

85 to top of toggle switch

MSD 2 Step
blue wire to 87
white with blue tracer not used
black wire grounded
follow wiring diagram for the coil hook up

JMS Transbrake
blue wire go to 30 on relay
grey wire go to 12 volt key power
red wire go to top of toggle switch
pink wire go to neg battery
follow wiring diagram for the pcm wiring

Down Shift Paddle
pin 23 on the bottom pcm harness that has 103 pins. Wire color is (GY)
cut with 3 inches of wire coming from pcm
Wire from pcm go to 87a on relay
Wire from down shift paddle go to 30 on relay

I have tested when toggle is off everything works as it should with paddle shift down will work as it should. When toggle is on paddle shift down will not work and transbrake and MSD 2 Step will activate when you hold in paddle shift down. JMS transbrake red light will activate when hold the paddle shift down in. I took off the grey wire off the JMS transbrake to test MSD 2 Step and it worked fine. Not able to full test everything yet as in Missouri we have been having ice and rain the past few days. Will fully test this week.

Good info, thanks for posting it up!

nice work!! i thought i had read somewhere that the trans brake stuff was not good to use on the 6r80....just noticed this is old post so curious how this worked out?

5000 Miles no issues so far.

awesome, i will be doing the same thing on mine..perfect set up
thanks Again!!!

sounds like a nice setup.