1970 chevelle only starts if I disconnect then reconnect battery
1970 454 ss chevelle, car was fine, then one day, when I went to start it, I just got the click from the starter solenoid a couple of times, the n it would start, but only once
we have checked the battery, battery cables, ignition switch, purple wire, voltage regulator, horn relay and starter(two of them), and yet the car will only start if 1. on a charger, or 2. if the cables are disconnected and reconnected,. and then it will start only once. What is also odd, when I turn the key, the temp gauge freaks out, needle is all over the place unless the car starts. related I do not know.
car will start in both neutral and park so it it's not the neutral safety switch, we've cleaned/checked all the grounds, and there is no alarm on the car. any thoughts what might be going on?