Forum Discussion
CA_Traveler
Nov 19, 2021Explorer III
If you don't have any better option both of these ideas might help but both have issues.
A spark doesn't necessarily mean there is a issue. There can be capacitance that initially draws power then doesn't. Plus disconnecting a circuit can cause a reset condition when reconnected. The sparky test can be misleading as to any potential issue. MAYBE helpful.
A glowing bulb also doesn't mean there is a problem, as it's a low amp device in series and has significant voltage drop and can (and likely does) change how devices on the circuit work if they work at all relative to trying to resolve some issue.
An ammeter is the best solution of course. A clamp on ammeter is the easiest to use and doesn't change the circuit at all. See if you can borrow one, but both are very useful devices to have for cars and RVs.
A spark doesn't necessarily mean there is a issue. There can be capacitance that initially draws power then doesn't. Plus disconnecting a circuit can cause a reset condition when reconnected. The sparky test can be misleading as to any potential issue. MAYBE helpful.
A glowing bulb also doesn't mean there is a problem, as it's a low amp device in series and has significant voltage drop and can (and likely does) change how devices on the circuit work if they work at all relative to trying to resolve some issue.
An ammeter is the best solution of course. A clamp on ammeter is the easiest to use and doesn't change the circuit at all. See if you can borrow one, but both are very useful devices to have for cars and RVs.
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