New GT750 wiring harnesses have different colors

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Suzuki 2-Strokes: 1972 GT750
Location: Bay Area

New GT750 wiring harnesses have different colors

Post by acruz »

I recently bought new wiring harnesses for my 72' GT750 and I was in the process of changing them out. The new harness however has some different colored wires than the original ones. Has anyone used these new wiring harnesses and if so can you please advise on installation.
1972 GT750 Lavender
1972 GT550 Aztec gold
1969 Honda CB750 Blue Green
1969 Honda CB750 Ruby Red
1969 Honda CB750 x4 projects
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Suzuki 2-Strokes: 69 T350 thru 75 GT750
Location: southwestern Pennsylvania

Re: New GT750 wiring harnesses have different colors

Post by jabcb »

Do all of the connectors on the new wiring harness match up with the original ones?

Late model GT750s have additional wires for the gear indicator.
GT550s can have 6 wires going to the ignition switch , which is 2 more than the GT750.
GT380s don’t have the electric starter circuit.

If the connectors match up, then you may have a wiring harness made when Suzuki wasn’t able to get adequate amounts of certain colors of wires. Service Bulletin GT-23 shows the temporary color changes Suzuki made to deal with this issue. ... 022-26.pdf
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

GT750 2x75
GT550 72 project & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
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