See also:

Detachable trailer hitch (accessory)
Detachable trailer hitch (accessory) a Ball holder b Locking bolt c Cotter pin d Hitch assembly e Safety wire attachment ...

Electrical system
General information 12-volt system with voltage controlled generator. Single wire system in which the chassis and engine block are used as conductors, grounded on the chassis. Battery If you ...

Accessory installation
• We strongly recommend that Volvo owners install only genuine, Volvo-approved accessories, and that accessory installations be performed only by a trained and qualified Volvo service technici ...