I back probed at the coil. I put the paper clip in before I put it back together since I had the air box out. I went down and around by the radiator fill because I could get my hand down their after it was all put together to remove it. I am not 100% sure that the wire you found is it, but, you can hook it up their and try it. Start it up and just touch it and see what the meter does. If it matches the tach and swings with the tach that is it. I can even try it with mine. We've got a nice day today and I need to clean her up, and take her for a ride.
My wife was ok riding on my V65, but there wasn't enough room for both of us. It took a year of searching before I found this one. She fell in love with it the first time we took it out. I traded the V65 for it even up. I went in to this knowing I'd have to do some work to it. On our first ride I noticed that the Accel was lacking, the power wasn't what it should be and she backfired on decell. I tried SeaFoam. I added it to everyother tank. It cleaned out the tank great, "but" the fuel filter turned brown the almost black. I decited to pull the carbs and check the floats. I found that they have been off before cause they were #ed on the bottom. Funny thing is they didn't even # them right. Half the floats were high and the others were low pluse the fact they had a rusty build up in the carbs. Pulled the needles from the seats and found they all had a build up ring on them. I got a compleat rebuild kit on EBay. Got them from Canada. $90 with s/h. cleaned and blew out all the passagees, replaced all the parts and set the floats at 7.5 mm. "That was fun with out the float gage" Put the carbs back in warmed her up and ran the settings. I took her out for a ride but found I needed to ride with a little choke on. Reran the idel drop and set her a little leaner. I took her out on the bypass, "speed limit is 65" After pulling out and gaining speed I was at 80 mph before I knew it. She was screaming and begging to go faster!!! I am inpressed on how well such a heavy machine rides and flies!!! I will try to get some pictures of her today and post them.
How many times do I have to tell ya,,, The right tool for the right job!