TST? IF you are not using the cooldown timer you just need a 12v+ and a switched 12v+. TST told me what the specific connections for the dodge fusebox were but I didn't write it down once I found out I only need constant and switched power. Now if I can just get my head off the flow bench and back on the engine maybe I could get something IN the truck
LOL
Yes it's for the TST Power. If I'm wiring it, might as well do it all. I know the #28 and #32 are for Key On/Run and that the TST is supplying 12v to one for the cooldown.