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Dr. Hamman
Dr. Hamman, Technician
Category: Classic Car
Satisfied Customers: 2436
Experience:  I have 30 years experience repairing, restoring, and customizing cars, and pickup trucks.
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1977 dodge no crank no head lights no power iside,

Customer Question

1977 dodge no crank no head lights no power iside
JA: Is the power loss consistent, or does it fluctuate?
Customer: consistent , by passed all fuse links still no power
JA: What is the model of your '77 Dodge?
Customer: dodge Durango motor home 440 engine
JA: Are you fixing your Durango yourself? What have you tried so far?
Customer: just by passing the fuse links
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 4 days ago.
Category: Classic Car
Expert:  Joseph Book replied 4 days ago.

Good Morning,

I need to ask few questions to start isolating your power loss. We are going to perform what is called a last, last, loss method for troubleshooting this.

  • Do you have power at the batteries, what is the voltage reading?
  • Do you have power at the fuse panel, this should have power all the time?

What we are trying to determine is where the power from the battery is lost.

Customer: replied 3 days ago.
new battery, no power inside
Customer: replied 3 days ago.
would it be the wire harness connection block where it goes to the inside of the vehicle
Expert:  Joseph Book replied 2 day ago.

That would be the next place to check. What you are doing is working backwards from the component that should have power in this case the fuse panel. Then go backward through the harnesses to the battery, checking at each connection point to find where the power is lost. The connection at the firewall would be the next place to check. If no power there then trace the harness back towards the battery and check the next place.

Working with electricity is very similar t working with plumbing. If you have no water at your faucet you check the pipes from the faucet to the main looking for leaks, same concept with electricity. Your leaks with electricity are going to be broken wires, heavy corrosion, burnt or damaged pins.

With RVs since they sit for a good amount of time it is very common to find animals that have chewed through harnesses.

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