I have a customer's car we installed a Saab OEM Trailer Light Control Module and harness. There is no Option in REC or BCM or UEC to add the Trailer light package. I performed the SPS of the REC as per a bulleton and it still does not function correctly. It's a 5 Pin connector into a diode box then 4 wires. The brake lights are the ONLY working lights through the harness. Anyone ever have a problem before with the these?
THANKS!