The first part of this video is a no crank diagnosis. After getting it running we perform a cylinder drop test to identify the misfiring cylinders. A simple incandescent test light is all that was used.

How to troubleshoot a bad engine block ground with just a simple test light. The key with this type of troubleshooting is in understanding how to "load the circuit", which in this case is achieved by holding the key in the crank position.

How to test a starting system on a 2000 Jeep Wrangler 4.0 using just a basic test light. In this video I will be showing you how to quickly locate the problem of any no crank problem, on any car.