Hi, all. First time here. Got an 85 GMC truck, three wire alternator. Alternator went out on it couple days after I got it, replaced with a new one... still doesn't charge. I've checked the connections, all seem right as far as I know. Batt wire goes to starter post that the battery is on, #1 wire is switched 12 volt, #2 goes to fuse block. It will run the truck with no battery at 12 volt (sometimes), but never goes up to 14.6 or so like I want. Any ideas? I'm completely stumped. Also, the wiring isn't stock in this truck. Not exactly butchered, but definitely not stock.