BOught an interior light from Hummer. The wiring is different. It does not appear that the use of this fixture will preserve the options of ON/OFF/DOOR Can anyone identify the proper wiring from the original to this new interior light fixture? ORIGINAL Purple Bulb End Purple/white Switched end Black Other Switched end versus Hummer narrow spade at switched end Spade with Diode (center spade) Spade at bulb end