Sorry if this is a old topic, am new to this site. Dealer wants about $900 to install trailer hitch on 2003 xc70 AWD. Aftermarket products cost less than $200. Would it be a mistake to purchase a Class II hitch on line and install myself? Have looked under car and can't say it obvious where one would bolt in. Anyone have a picture? Also, where is exit point for wiring harness from electrical adapter at rear to undercarriage? <br>Thanks.