I have an 86 1200 sei that was working fine last fall, but when I got it out this spring and put a new battery in it I got to ride about 3 miles before it quit charging. Upon some investigation I decided it had to be the regulator so I installed a new one. Problem not solved. Upon start-up the bike charges normally indicating 14.3 volts. After anywhere from 10 seconds to 2 minutes the system completely quits charging and voltage drops to 12 or lower. If I shut off the bike and immediately restart it the process repeats. All the problem connectors have been removed and soldered together. And I have been through the system with a fine tooth comb looking for bad connections. Any advice or info would be greatly appreciated.