"It is nothing more than separating a single strand from a piece of wire while keeping all the remaining strands intact. Depending on how many total strands there are, the thickness of an individual strand can be as little as 0.0025 thousands of an inch. I take the separated single strand and insert it into the female end of the wiring connector I want to access. I then fold it back on the connector and hold the wire in place with tape. Next, I reconnect the connector to the harness. I now have a test lead that I can connect to my multimeter or scope."
Joe Glassford Joe Glassford is the owner of Vestest.com, a website devoted to voltage drop testing techniques. He retired after 29 years of service in the public school system teaching automotive repair, but remains active sharing his knowledge at events like ATE and VISION HiTech. He also is an AutoPro Workshop member, going by the screen name Vestedjoe.
For his winning tip, Joe receives a fender cover from Mitchell 1 along with a hand-crank emergency flashlight. Enter your tips at MotorAge.com/TechTips for your chance to win.