Below are links to some troubleshooting aids I created while trying to unravel the mysteries of the (Lucas) wiring system on my ‘74 Jensen Healey. The first one is an EXCEL spreadsheet that lets you input the symptoms of your car’s wiring system problem, and then it narrows the fault hunt to particular fuses, connections, junctions and components. The second one is a simple power distribution sketch in Word format that helps you visualize where the problem might be.

Good Luck!

Jensen Healey Troubleshooting Spreadsheet (EXCEL)

Jensen Healey Power Distribution Diagram (Word)

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