Review on 🚗 EM285 Car Circuit Tester with Automotive Electric System 6-24V DC Tools - Find Short Circuits, Test Continuity, and Track with Auxiliary Ground Lead. by Joseph Redding

So for another $75 you can add a voltmeter or just use this simple tool and put your loose change in your pocket. Haven't used it yet, but looks like it will do the job of testing simple circuits. I haven't even seen the need to buy a more expensive model that displays voltage and has light. It's hard to beat the price and features, which is why I'm considering getting a second one for a young friend trying to learn mechanics.