At work we used these current sensors which were wired to LEDs. The current sensors did not have to be spliced, they had a black platic loop that the wire got thread through. The sensor sensed the magnetic field created by the current and then lit up the LED. It was pretty cool.
Speedy
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1983 944 guards red with 16" Fuchs, Host of Wisconsin area timing/ balance shaft belt tensioning party
1987 944S Purchased from Legion. Corvette LT-1 V-8 conversion with Mega Squirt II
Check on progress --->
www.porschehybrids.com/gallery/speedracing944
Favorite Road =
www.tailofthedragon.com 318 turns in 11 miles (11 min 20 sec best run)