I just bought this 80 xs 400, i hook the bike up to a jumper box, lights all come on except for the headligt, when I used a light tester, I connected the alligator clip to the positive and i check the headlight connectors both getting power, when I have the low beem switched to low and touch the ground or bottom connector the light cluster lights up and when i switch it to high beem the headlight works. If I shut the bike off, the headlights wont work unless I touch the bottom connector with the light tester. It seems there is a clicking noise when it comes on too. Also I think im having a ground issue because I can touch anywhere on the bike and get the tester light to come on. Do you have an idea where I should start? THanks