Power Probe III Automotive Diagnostic Test Tool: Fire Edition (PP319FIRE) - Digital Volt Meter, Current Resistance, Circuit Tester | With Case & Acc Review

Haven't used them yet but my son swears by them for tracking shorts of any kind, bought these as 4 is taller than me. My son would still talk me out of 4. He has this

Works great for testing the car's A/C compressor clutch and my radiator fan circuit low and high speed. The PowerProbe was a very good investment in saving time and money on this repair.

I was tired of doing things the old way or borrowing a probe from a mate so I finally spent pennies to make my own to get. Definitely invaluable if you are doing any electrical work in a shop or at home. and for the price I would buy one for my home tool collection as I repair all my cars of every caliber myself.