Car only turns over when the turn signal is on

49 Austin I think. Every time you enter a turn, hit the sw and power thru it with 4 extra horsepower, which about doubled the total available power when the starter kicked in.

But if you have a 67 to 76 A-body with an automatic trans, then I would look at the column switch wiring, and make sure the NSS is working and properly connected to the start-relay. You may also find your bulkhead connector melted.