Factory offroad lamp bulbs are H3, Sylvania. I replaced with xenon gas H3 bulbs, I am happy with the white light. Factory lamps has 2 solid black covers with Hummer logo imprinted. Also has 2 plastic lamp guards with Hummer logo. The guards must be removed to use the covers. I just replaced the covers with lamp guards tonight and repositioned the offroad lamps, now with offroad lamps and highbeam, the entire front up to treetop is lite up. The trouble is when there is auto approaching, I need to turn off lamps at overhead console switch and cancel highbeam, but we have very little traffic in our hills and I don't use the extra light often.
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