You will need a little more than a wiring harness off a trike with a battery. The left side cases are different, along with the crank, and stator. You'll need the stator also, which includes the generator for the battery. On these trikes with batterys the flywheel and stator are mounted 'backward', which is why the crank and cases are different. You will need all of this stuff to make it work right.
-Nick
1988 Chevy Silverado 5.9L Cummins : 1986 ATC250R : 2012 Polaris RZR 570 :
98% of Americans say 'OH $#!T!!' before going into a ditch on an icy road. The other 2% are Alaskans, and they say 'Here, hold my beer and watch this!!'