I just picked up a 1968 Ironhead XLCH. Does anyone know where to get a replacement wiring harness? Need one from tip to tail.

 

Try Jp Cycles vintage catalog. Or Drag Specialty maybe

 

J&P Cycles has OEM-like wire harnesses.

Ultima has some that are not like OEMs and apparently are much better with a control box for signals, breakers, etc. At the bottom of this page ...

http://www.ultimaproducts.com/electrical.html