Triumph T100, T120 & TR6 Motorcycle Wiring Harness Main Harness for 1969 thru 1970, Triumph T100, T120, and TR6 Motorcycles equipped with Turn Signals for US Market. Manufactured with PVC wire, with a PVC tape wrap. Triumph Wiring Harness: Motorcycle Parts | eBay triumph wiring harness 1969-1970 650 500 tr6c t100c cloth c model only. $139. buy it now. free shipping. the part of the harness leading to the headlight is a vinyl covering. you should also have a factory manual when doing this. we have a large range of harnesses for most years. triumph wiring harness.