So I have been restoring my 84 G4200 tractor and I have it pretty much all wired. I bought new harness wires there were 2 that are discontinued. The old wires were a wreck and I couldn't make heads or tails from them. So I bought a new regulator and the end of it has a 5 wire plug on the end of it. There's no where to plug this into but there are the corosponding wires so I cut the plug off and but connected them. There are 2 blues a black red green and yellow. My question is where does the yellow wire go to? My schematic only shows 3 wires coming off the regulator and one of them is not yellow.