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1983 Honda vt750 Shadow
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Did the 30 amp main fuse blow?
Possibly connected the battery backward? Clean terminals?
Put a meter on the battery and see what the voltage is. Then test the voltage on both ends of the main fuse.
 
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Discussion Starter · #6 ·
I've checked the battery > it's fully charged.
The main 30A fuse is good > checked.
Fuses on the front are all good > checked.
I'm thinking the ignition switch is bad. I'll be checking those wires next.
Thanks for the suggestions & if there are other ideas/options please let me know.
Happy St.Patty's Day!
 

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A couple of things to check.
  • Main ground connection is loose or corroded. (Resistance from Batt - to ground should be almost none.)
  • Main cable between battery and starter relay / main fuse housing loose or broken. ( a quick check with ohmmeter, or look for voltage drop between battery and main fuse.

Is 12V + present on the main fuse with the ignition off? It should be.
 

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2001 Valkyrie I/S
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What year and model bike is this?
 
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Discussion Starter · #9 ·
bike is a 1987 honda shadow 700.
Should I get continuity through the rectifier? There is a little diode (S3H-02) and there is not continuity through that. Would that cause the bike to get no power to the ignition switch?
I turn the key on and still have no neutral light or any other power!
 

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Discussion Starter · #10 ·
A couple of things to check.
  • Main ground connection is loose or corroded. (Resistance from Batt - to ground should be almost none.)
  • Main cable between battery and starter relay / main fuse housing loose or broken. ( a quick check with ohmmeter, or look for voltage drop between battery and main fuse.

Is 12V + present on the main fuse with the ignition off? It should be.
Yes 12V is present at the main with the power off.
 

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1983 Honda vt750 Shadow
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20,604 Posts
The regulator/rectifier and that diode are not in the main power circuit.
The diode is on the grounding side of the starter circuit.
The regulator should have power on the big red wire if it is connected to the battery positive post , Or on the B terminal with the starter solenoid with the big battery cable.
 
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