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| If you are dealing with old, 12VDC only, stuff (tractors before computers and 5V or 3.3V circuits) an incandescent test light can help a ton on finding shorts and open circuits.
If the circuit is AC, I really like multimeters with an ammeter clamp. Flukes are wonderful, but a cheap meter is still better than no meter at all.
Example of a cheap meter with a clamp: https://www.harborfreight.com/electrical/electrician-s-tools/multime... | |
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Advice
