installed my new mirrors , need to know where to tie in to get directional lite feed under dash .

 

Sorry.......no such wires under the dash. The multifunction switch sends a multiplexed signal to the IPM ( Integrated power module ) and then IT sends a power signal to the lights. Here's the diagram. No biggie though, just run the wires back into the cab and go from there!

 

where is the ipm located

 

Under the hood with all the fuses and relays in it.