i got a 82 virago 750 from my wifes exhusband. the wiring is all hacked up and the bike doesnt start. my friend and i can only get it to crank over but not start. the only way to get it to crank is to put a jumperbox on to starter and bypass all the other wiring. any help is good.  

HI; You need to get the service manual. One with a wiring diagram. That's the only way to figure out where the wires go.  The only other way is to trace each wire and match the colors up. Then hope nothing got shorted out when the hack job happened.. scruffy..  

You can bypass almost all wiring on this bike to see if it works by running wires to the starter and the coils if you have a good battery it will at least tell you if it runs  

I to have the same problem and i found a manual online Free download hope this helps you out http://www.thehawkeye.com/Story/k0125-BC-MidwestFlooding-Bythe-06-15-0180