I’ve got a 2010 mustang with a 2012 f150 3.5 ecoboost motor and 6r80 trans using the factory PCM and wiring harness. I used the instructions for the f150 and wired up the transbrake. I soldered and shrink wrapped all connections and triple checked the wiring diagrams, the wiring is fairly simple and straight forward. The green led comes on with the key and the red led comes on when ground is applied through the momentary switch.
The transmission does not hold, with the red light on or off the transmission is unaffected.
Can anyone help me quick? I’m leaving for the ecoboost battle in 3 days and need this sorted out before I race.