If your Volvo V-70s tail light assembly ever gets cracked you should replace it immediately. Although the taillights are typically sealed, a cracked tail light assembly can allow water and moisture to seep in, which can cause electrical shorts. Purchase your replacement headlight assembly either directly from your local Volvo dealership or order it from an auto parts store. It will take you approximately 20 to 30 minutes to complete this repair.
Pop your V-70s bonnet and remove the negative battery cable with your socket set.
Open the rear hatchback of your Volvo V-70 to access the tail light assembly.
Pull the fabric cover aside. Turn each tail light to the left and lift the bulb and socket from the assembly and set them aside.
Unscrew the side screws that hold the entire assembly in place. Remove the old assembly and set the new one in place. Insert the retaining screws into your new V-70s assembly. Reinsert the taillights by slipping them through the rear hole on the assembly and turning them to the right until they click into place. Set the fabric cover back into place.
Replace the negative battery cable on your V-70.