Finding shorts with this?

[Rawze]

(07-12-2017 )Kid Rock Wrote:  https://amzn.to/2VGMWUZ

Anybody ever use this in our application of big trucks? Did it work well? Im trying to find a short to ground in either my fuel shutoff or my fan circuit and this tool looks to be a real time saver?- and would just be cool to have around it seems

Basically one part of the tool hooks up to say the 12v hookup on tge shutoff solenoid- then a tone gets sent back through the harness and the can be traced with the wand until theres a break in thr circuit

Just concerned about its useability... with the ecm harness off it shouldn't spoke the ecm by sending the tone down say the fan supply circuit or the fuel shut off circuit? Its sending 12v I believe ~Because hypothetically, i should be able to follow that tone until theres a break in the wire hopefully locating the ground to short?

Any thoughts on this? Seems like a fair price. Better than a harness if its a ground out that i could reattach.

We used to call the a "fox and hound" when working on electrical wiring systems on industrial machinery. Pretty much useless for finding broken wires, the rf signal will usually jump right past the break in the wire. They are better suited for finding where a wire goes more than finding problems.

What i tend to do for finding bad wiring is that I will strip off all the wire loom from the circuit and look for the obvious sign of a discolored spot in the wire. A place where the insulation is slightly darker color than the rest, usually in a bend. If I can't find it that way, I will pull very hard at each wire in the group where it makes bends and turns corners, or where moisture can get to them. That will find the weak point every time.

Had a passenger headlight go out on me down in Miami Florida in the pouring rain one night. Bulb didn't fix it and We were on a tight schedule. I pulled off into a dirt parking lot (only place I could find to park) and laid in the mud and rain under my truck for 2 hours ripping apart wire loom and yanking hard on wiring for the headlight circuits. I found one that the insulation stretched then snapped after pulling hard on it in a bend at the bottom of the frame. I ended up finding 3 other wires getting ready to do the same thing in that same spot when I yanked on them too. I patched them and then after we delivered I fixed the problems correctly and put it all back the way it should be.