Volvo C30 2007 Service And Repair Manual page 224

ACCESSORIES AND EQUIPMENT Bumpers And Mudflaps - Installation Instructions, Accessories
Fig. 206: Identifying Ground Lead With Screw And Toothed Washer
Courtesy of VOLVO CARS CORPORATION
Does not apply to cars for USA.
Loosen the ground cable from the leading edge of the side member's outside.
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Fig. 207: Identifying Tie Strap
Courtesy of VOLVO CARS CORPORATION
Cut off the cable tie (1) that holds the cable to the left radiator bracket.
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APPLIES TO ALL MODELS
2012 Volvo C30 T-5