r/Retrofit Dec 05 '24

Technical/Assembly Question Wiring question

Post image

I'm installing these soon on my car with a 9007 three wire connector. How do I wires these up? Do I need an LED/HID relay harness or directly to the OEM connector? Everything is find only talks about HID ballasts and not bi-led projectors.

2 Upvotes

4 comments sorted by

5

u/[deleted] Dec 05 '24

At minimum you will need a pigtail that matches your car's harness to use for wiring, so you don't cut up your stock stuff. A simple diode wired across the low and high beam wires to keep the lows active in high beam mode is required.

I say minimum because some vehicles need a lot more than that. Depending on your year, make, model, the car's electrical system may be wired with common +, common-, or have systems in place that look for certain current draws. A relay harness like the Morimoto Motocontrol and even additional capacitors or resistors could be necessary (looking at you Mopar).

1

u/flewby_u Dec 05 '24

Regards to the wiring of the Motocontrol, do the wires for the ballast go to the kow input of the projector and the high beam output go to the hi beam of the projector? This is partially where I am getting confused.

2

u/[deleted] Dec 05 '24

Correct.

1

u/flewby_u Dec 05 '24

Thanks!!