Vintage and Classic Hondas

Electrical question

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birdmannn101

Electrical question

Trying to put the wiring back on this 76 CB750A, I finally got power to the combination pilot indicator. It only lasted about 3 minutes and then no power. I checked and replaced the main 15A and top 7A fuses even though they were still good. Still no power. Is there anything else I might have overlooked????

66 S90
64 C102
65 C100
65 CT200 Trail 90
74 CB350Four
73 CB750K3
76 CB750A
03 VTX1300S
Bicycle with HF engine

TOOLS1

Re: Electrical question

Administrator

Corroded connectors, broken wires... You will need to use a test light, or multimeter, and trace back along the circuit to find the problem.
TOOLS

Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
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It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
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"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

LukeM

Re: Electrical question

Administrator

Check your main ground wire as well. Should be a green wire attached to the frame, either under the gas tank (on my son's '75 CB550) or under the seat (which is where it was on my DOHC 750).

Ain't electrical problems fun? It's like herding cats...only more frustrating.
Luke M

Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.

birdmannn101

Re: Electrical question

Talking about fun Luke. Fun is when you find the problem is coming from a defective store bought jumper wire. Fixed the loss of power.

66 S90
64 C102
65 C100
65 CT200 Trail 90
74 CB350Four
73 CB750K3
76 CB750A
03 VTX1300S
Bicycle with HF engine