Moisture can sneak in behind the cable’s insulating jacket and corrode the copper conductor, which affects the current flow from the battery and can even break the continuity to chassis ground. (Image/Ron Francis Wiring’s YouTube Channel)

Battery cables are big and sturdy, which often means it’s easy to overlook them when troubleshooting vehicle electrical issues.

But you really shouldn’t. In fact, your vehicle’s battery cables are one of the first places you must inspect when chasing down electrical gremlins in your car or truck.

The wire wizards over at Ron Francis Wiring put together this quick video that’ll show you a few things to look (and feel) for when inspecting your car, truck, or SUV’s battery cable. It’s a short, easy watch and is relevant whether you’re working on a classic cruiser or a late-model commuter. Check it out: