Check out these guys:
http://www.isqe.com/wiring.asp
They make a wonderful product and back it up with support that can't be beat!
I pulled the original harness I put into my E-M and have been very happy.
Lots of the F5 guys like this unit as well.
here is a link to check out on the F5 site.
http://www.ffcobra.com/cgi-bin/ultim...1;t=002004;p=1