Hi, would someone be so kind as to verify which color wire is which in the Factory Headlamp connector. (The 3-pin connector that plugs into the bulb.) The HID Relay Harness came with 3 loose wires.. Blue, Brown, & White.. I was told to just "stick them in each hole to see which is which"... About at my wit's end, would someone please let me know what I need to do? Thanks. I'll be here sitting in the dark.

(2008 F-150 Supercrew Lariat) - H13 Relay Harness.

 

Lol.

 

If it's the same as '09+ years, the white is ground, blue is high beams and brown is low beams.

Edit: I just realized you want the OEM side of the connector. I will have to try to find my notes!

 

Man if you don't mind... That sure would eliminate A BUNCH of concerns.. White is ground, blue is high, brown is low. Great. Now, on the OEM side, I have ... Can't even remember. Too many google searches, misinformation, etc!!!!

 

I'll see what I can do....I have been searching all of my "safe places" with no luck so far. I gotta stop using sticky notes and get myself a notepad.

 

Looks like white goes to middle (ground), blue is hi-beams and brown is low-beams on outside

 

A 2$ test light and 2 minutes of your time should be all you need..

 

There were a few different variables that was throwing off voltmeter readings (or so I thought). Loooooong story/process/inexperience.

 

Regardless what the PWM module is doing to the voltages, use a test light.

Put the clamp on the negative battery terminal and turn on the lowbeams. Whichever prong lights the test light is your low beam lead.

Same principle when you switch to highbeams.

Ground is found by elimination.

 

Cool.. Thanks.. definitely will in the future.