I've used liquid electrical tape, and have been less then impressed with it because of how stiff it is, and poor it bonds, I prefer the heat shrink that has the soft glue in it to better seal the connection, for wiring harness repair I've been useing a silicon electrical tape that I found in the electrical section, it only sticks to it's self, and is extreamly flexable, simaler to that weird tape that comes on wiring harnesses, only softer.
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