One problem related to wiring has been reported for the 1999 Volvo V70. The most recently reported issues are listed below.
Our 1999 Volvo V70 simply stopped without warning. Portland, me dealer "reprogrammed the computer" and "checked. " we drove 1500 miles and again it stopped. . . This time repeatedly. Indianapolis dealer kept the car for 3 weeks and reported that they inadvertantly solved whatever the problem was ($435). In the subsequent month & 4500 miles later, all appears to be well.