few ppl have installed those. I'm assuing the wiring is to make sure they let people without the auto level know. You should be able to plug and play. Send the seller a msg. Good luck.. I feel your pain.. went through it myself.

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2005 LeMans Blue e53 4.8is
MODs
///LeMans Blue RBs///Intravee II///Sirius///ACS Spoiler///AiB v3///HID Fogs///LED Tails///
///215 20" Ferric Gray///MTEC Pedals///DVD Headrests///SMG M Wheel///AFE CAI Stage 2