This forum has been a great start for me in getting my head around my new-to-me 1974 GT250 (K?). I bought the bike Friday afternoon and got it cranked up and running yesterday morning. Runs pretty well, clutch is good, brakes are good, shifts well, gauges work.
My biggest issue is the electrical. One of the previous owners Frankensteined the wiring, it seems. I have looked all over, but I can't seem to find a diagram for the 1974 GT 250. Does anyone have one or know where one is? I think I may have to basically rewire the whole thing, at least all of the lighting.
Just bought a 1974 GT250, looking for a wiring diagram
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- Still in the Driveway
- Posts: 2
- Joined: Sun Apr 02, 2017 9:28 am
- Country: United States
- Suzuki 2-Strokes: '74 GT250
- jabcb
- Moto GP
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- Joined: Mon Dec 13, 2010 4:32 pm
- Country: USA
- Suzuki 2-Strokes: 69 T350 thru 75 GT750
- Location: southwestern Pennsylvania
Re: Just bought a 1974 GT250, looking for a wiring diagram
This is the diagram for a GT250B. The diagram shows a voltage regulator that your bike doesn’t have.

BAS (Bike Acquisition Syndrome) - too many bikes but have room for more
Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
-
- Still in the Driveway
- Posts: 2
- Joined: Sun Apr 02, 2017 9:28 am
- Country: United States
- Suzuki 2-Strokes: '74 GT250
Re: Just bought a 1974 GT250, looking for a wiring diagram
Thanks! That really helps.
- jabcb
- Moto GP
- Posts: 4311
- Joined: Mon Dec 13, 2010 4:32 pm
- Country: USA
- Suzuki 2-Strokes: 69 T350 thru 75 GT750
- Location: southwestern Pennsylvania
Re: Just bought a 1974 GT250, looking for a wiring diagram
You bike may start & run fine without a battery connected. But don’t do it. The battery is the voltage regulator. Without a battery you will burn out the lights.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more
Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE