Well, I attempted to upgrade to the newer alternator on my '72 skylark - installed a new Year One engine harness while I was at it since the original was about past its prime. Now the car won't crank - engine lights come on with the key, when I turn it all the way to the start position, the 'hot' light comes on. I used a new conversion plug, wired the #1 wire into the old blue coming from the original alt plug, the #2 wire went to the BAT terminal on the new alternator, as per instructions. I do have correct voltage at the alternator terminal and with the key on, 3+ volts at the blue and brown spliced wires which came from the original voltage regulator (they act as alternator exciter wires when connected). Everything's wired correctly at the starter as well. Also installed new battery cables while everything was apart. Any thoughts out there as to the problem? Car fired right up every time under the old points system ou:
If the problem occurred after the harness change, I suggest checking the connections. If it won't start, but will crank, check the connections on the solenoid, and the ignition switch. If it won't crank, check the connections on the starter and the switch as well. It is possible that the new harness, improperly connected burned a fusible link, located near the starter, creating a lost voltage to the switch. Ray