"I bought a Pertronix ignitor
"I bought a Pertronix ignitor #2842 for a 151c Volvo 4 cy. that has points. I followed the instructions and put the red wire to + side of coil and the black wire to - side of coil and took out purple wire from the condenser and points to the + side of coil. Called Tech at Pertronix to see what to do with gray wire which was connected to the - side of coil and he said to put it on the + side of coil with red wire and do away with the purple wire . Won't start. Checked gray wire for current with test light and no current. Would like to know if it is a negative ground system,does that mean the gray wire doesn't have any current. If so,is there somewhere I can pick up current to go to the + side of coil when the switch is on . If so, what do I do with the gray wire coming out of the harness? Will that solve the problem at all??"
"I bought a Pertronix ignitor #2842 for a 151c Volvo 4 cy. that has points. I followed the instructions and put the red wire to + side of coil and the black wire to - side of coil and took out purple wire from the condenser and points to the + side of coil. Called Tech at Pertronix to see what to do with gray wire which was connected to the - side of coil and he said to put it on the + side of coil with red wire and do away with the purple wire . Won't start. Checked gray wire for current with test light and no current. Would like to know if it is a negative ground system,does that mean the gray wire doesn't have any current. If so,is there somewhere I can pick up current to go to the + side of coil when the switch is on . If so, what do I do with the gray wire coming out of the harness? Will that solve the problem at all??"