I have recently got the car running and decided to convert the car over to a 3G alt. I did this for 2 reasons, the 2g alt was bad and come on, better output. I ran a 4 gauge cable from the starter relay to the main post on the alt. I connected yellow to yellow and green to green with a fresh plug from the bay. I jumped the middle white wire over to the single wire plug. There is no charging to be seen by the multi meter or the dash gauge. Any ideas? Thanks