Gardner Bender LTG-400 Waterproof Liquid Electrical Tape, 4 oz, Green

When diagnosing electrical issues in cars, I prefer to use a piercing tool to poke through wiring insulation so I can connect a multimeter, test light, or oscilloscope. Some people say you should back-probe the connector and that poking insulation is for hacks, but I've run into plenty of instances when back-probing a connector "fixes" a corroded or intermittent connection. Good luck trying to fix the problem when you can't get it to act up.Piercing the insulation means that you have to seal the hole back up, and that's when liquid electrical tape comes in. A quick dab seals the hole in the insulation.Not too long ago I had to use this to repair an engine wiring harness. The insulation had split on several wires in the harness and the conductors were intermittently touching one another, setting all sorts of trouble codes when the signals shorted. I grabbed the liquid electrical tape because the alternative was to cut, solder, and heat-shrink about a dozen wires in a cramped engine compartment.Instead, I cleaned the wiring harness, dabbed liquid electrical tape over each bare conductor, let it dry, and used wire loom and cable ties to secure the harness and keep it from moving. It's been almost a year and I've had zero problems with the wiring harness.This stuff is a life-saver for quick repairs, especially in difficult-to-reach areas.

I used this stuff after a so called expert shop butchered my car trying to find an electrical problem. They returned my car (after charging me $1700 for trying to find the problem) with multiple cut wires under the dash and a non working radio that was working when I dropped it off, SMH. Anyway, this stuff worked great, almost perfect except for the bottle of in used product dried up and was unusable by the time I needed it again. So basically I only got to use it that one time and I had the top on tight. It may have just been an old bottle or something, but I would definitely buy again and maybe store in a ziplock bag as well to help preserve.

Excellent product! The Gardner Bender Liquid Electrical Tape is easy to apply and dries quickly, forming a durable, waterproof seal. Works great for indoor and outdoor electrical repairs. The black finish looks neat, and the 4 oz bottle lasts long. Highly reliable for insulation—no cracking or peeling. A must-have for DIYers and professionals. 5 stars!