The trick is to make it read about 14.2V at the battery terminals when it's revved to about 3K in neutral. Look for the thread Charlie's Expanded Charging Guide (or somesuch) by gggGary. I worked on mine forever, and the problem finally ended up being heavily tarnished wires just barely twisted together, down inside the harness. First thing, you'll have to put your battery on a charger and try to get it up close to 13V. Also the connectors can go bad -- components can test good but the connectors they plug into will be bad, making it look like a bad component. Had some of that too