Read VIDA first to understand the original Volvo trailer module does on your car. On many Volvos the trailer module and wiring loom from Volvo is very reasonable priced. So much so that if far beats making your own loom.
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XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.
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