Does anyone know if I have to DISCONNECT the BATTERY when changing headlight units? Only one website said "disconnect battery." Other than that, in all the euro install instructions I've read, no one has ever mentioned it. If I don't have to, then I would rather not do it. Those who have changed their headlights to euros, did you disconnect the battery?
Is the 4-pin to 6-pin a "plug and play" procedure? Any soldering incolved? Thanks!