You can try re-adjusting the PNP switch and see if it straightens out your starting/reverse light problem, but most of the time the switch just goes bad and you'll need to replace it. There's a how-to over at Bay 13 on the PNP switch. You can loosen the retaining nuts and put the gearshift lever in Reverse with the key ON and the emergency brake ON, turn the PNP switch till the reverse lights come on, doesn't take much. If the reverse lights still won't come on then the PNP is just crapped out and needs to be replaced.

http://www.volvospeed.com/volvo_performance.php





Mike
'95 850T



The PNP switch is the thing under the yellow nut and it has the red tag on it....