No power on bike at all. 1996 VFR750f

previous owner said that wires touched the engine and melted. I think it might cause short circuit. I replaced the rectifier, checked the fuses checked the voltage in the battery and replaced the starter relay. Still nothing. can’t turn on the engine, can’t use any signals or turn on an LED lights. I’ll send the pic of the rectifier and all melted wires. Also i changed the wires and connectors for the ones that were going to the rectifier and relay.





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The RR and alternator wires have nothing to do with this. Get a manual and wiring diagram and you should find the power for the bike goes something like battery to main fuse (by solenoid) to fuse box to key switch to fuse box to bar switches to other devices, or something like that.

 

i checked that too and it’s in the starter relay, which one i replaced


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You need to start chasing down where the power is going (or not going). Apologies if this is teaching you to suck eggs.

Ignition on, engine not running.Connect your voltmeter negative to the negative battery terminal, set to read 20V and start probing with the other lead. On the positive battery terminal you should see 12-ish volts (or whatever the battery is putting out). Now move the positive to the red wire at the solenoid, then to the red wire at the ignition switch, and then to the red, the blue/orange and the red/black entering the fuse box. If you see 12V at all points then you've confirmed that fuses are being fed with power. If not then you need to start tracing wires and looking for a break.

I'm no electricity expert, but my mate @Grum certainly is.

 

I appreciate any help, that’s my first bike and i was doing it all for the first time by myself, i’ll definitely try what you said, thank you!


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There are two versions of the starter relay and they are mirror images of each other depending on with side the leads need to go. Battery or starter. And the wiring to distribute power will be in the wrong places if plugged into the other versions locations.

The relay will have a "B" and a "S" next to the posts. Make sure the old and new match.

 

i didn’t know that, now i i’ll definitely check because i got a new one but then i found out that the previous owner gave me another one al i’ll try it too. Thank you


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you were right!! i got it working, thank you so much !


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Quick follow up for anybody that has, or may come across, this situation. You can absolutely use the opposite relay, just swap the connectors in the plug. 2 wires that are on the "B" post side get swapped with the 2 wires on the "S" post side, maintaining their front / rear positions. I've done it a number of times.

 

definitely, that’s what i’ve done. I don’t even think that i would notice it without your help. I was already going to buy an M unit to rewire the whole bike basically


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