wiring trailer lights on my 2004.5 S40

mntnclmbr · Post by **mntnclmbr** » 14 Jul 2012, 12:41

Hey all, new here....Currently wiring my car for trailer lights - I got a modulite from etrailers if any ones familiar with that place. At any rate, im having a problem with distinguishing between the daytime running lights and the regular. Does anyone have any idea what colors the regular brake and night time running lights are....I just don't want to set off any codes and blow fuses. Any help would be great. Thanks

Post by **jimmy57** » 14 Jul 2012, 13:32

From wiring diagram in "REPAIR DATABASE":
On left side it looks like orange black is the brake and orange is the tail light.
Blue for left turn and blue/red for right turn.

To verify: Check for brake light power with ignition off when brake lights work and the tail lights don't. Use a stick or cardboard mailer tube of the right length or cut to the correct length so you depress brake pedal by sliding seat forward against your fabricated brake pedal depressor with the end if on pedal. Once you have the brake light wire ID's then get your pedal depressor removed and then turn on ignition.

mntnclmbr · Post by **mntnclmbr** » 14 Jul 2012, 14:50

thank you sir, this is a weird one because lights run all the time even on off....will try, Thanks

Post by **jimmy57** » 14 Jul 2012, 15:15

Don't put light switch in P (middle) position. Put the light switch in off (daytime running lights work anyway with ignition on) or full headlight position (all functions of lights work but again only when ignition is on).

mntnclmbr · Post by **mntnclmbr** » 15 Jul 2012, 23:43

Im back, I got them all working except night time running lights...I've switch things a couple of time but can seem to get the night times to run, "what have I done wrong here?" I've done alot of these but this has me stumped???