Alright I need any information on how to wire up my ef sedanback to usdm dual bulb headlihht from the single bulb jdm. My jdm headlight is crack at one of the mounting points in the core support and have a set usdm headlights sittting. Each headlight has two red wires on the outside oins of the h4 bulbs and a black ground in the middle.
I have searched but no luck on finding any thing useful.

 

Turn headlights on. Probe wires with volt meter to see which red wire is hot.
Done.

 

Both hot when lights are on

 

Testlight used to measure

 

You have a wiring problem.
One should get hot with headlight and the other gets hot with high beam.

 

Exactly what I was I looking for