Forums 🚥 PiT STOP 🔧 Hyosung Technical Help electrical problem – GV 125s bobber
- This topic has 5 replies, 2 voices, and was last updated 8 months ago by Carl.
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Aug 15, 2025 at 7:29 PM #20492Bike Model = : GV 125s bobber
Got back from ride today, turned ignition back on to check milage and bike is completely dead. Could be a blown fuse or something simple but want to check if this is a known issue?!
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Aug 15, 2025 at 7:45 PM #20494
have you checked the fuses yet ? and any thing suspicious under the hood like a burnt plug etc ? It has been a very hot week, so make sure to verify the charging system is good (with real figures please) – Nothing good about OEM regulators but worth checking though incase it fried something else on the bike.
Also check you have 12V at the plug going to the ignition barrel = If zero, check fuse or harness until you see 12v at the ignition barrel plug or report back what you’re doing so far.
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Aug 15, 2025 at 8:16 PM #20497
thanks, haven’t had a chance to check it out yet but will let you know what I find out as electrics are not my thing so friend is going to look at it on sunday.
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Aug 19, 2025 at 6:54 PM #20532
Hi,
Fuses are ok, but the guy who came to look at it couldn’t figure out the problem as he is not familiar with Hyosung bikes. All he could tell me was that there is no power reaching the ignition switch.
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Aug 19, 2025 at 9:08 PM #20534
Okay since there is no power to the ignition switch
Ask him this:
Can he confirm the regulator “red and green” or “red and black” wire is 12V ?
Can he confirm the “15A” fuse is showing 12V ? There should be power going to the wires attached to the 15A fuses (this is the “normal” fuse)
Other fuses and relays are for things like Regulator , Fuel Pump , Lights , etc… The ignition takes 15A fuse
if not , you may need to further strip the bike down, follow the battery’s red wire specifically , annd see where it stops giving 12V , there could be a break in the harness (kink, burn mark? , shorting? etc)
keep us posted!
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Aug 26, 2025 at 4:03 PM #20584
hi, the problem has been found and it was indeed a break in the harness. a wire had come loose from a connector, not sure which one yet but they did have to strip the bike down to find it.. Will be picking up bike tomorrow. thanks for the help. take care.
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