[65gto69]

Originally Posted by Bill Hanlon

Assuming you still read 12.9 or so on the battery posts ....

Turn on the headlights.

DId they come on?
...If no, use multimeter to measure from the middle of the + post on the battery to the battery cable attached to the post. Anything more than 0.1 volts indicates a poor connection between the + post and the cable.
................use multimeter to measure from the middle of the - post on the battery to the battery cable attached to the post. Anything more than 0.1 volts indicates a poor connection between the - post and the cable.
...If yes, try to start the engine while watching to see what the headlights do.

Report results.

With the battery measuring 12.9 volts when I pull the headlight switch it takes a few seconds before the headlights actually come on. They come on dim but gradually get brighter the longer you wait.

I measured the battery while turning on the headlights and the battery takes a dive down to about 1.5 volts, then the numbers go up slowly until it the voltage reads 12.1 volts. At this point when I turn the ignition on to spin the starter everything goes dead.

I took a reading as stated from positive center post to connected cable and got 0.00. Did the same for negative side and got the same reading 0.00.