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.
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.
I have a bunch of connections done with liquid tape. All of the connections are also soldered, and I've probably put 3 coats of liquid tape on top. I may end up putting some real electrical tape on top of that tomorrow.
If I could do it over I'd just use heat shrinks but I've already put enough time into the project. I guess I'll just trouble shoot the wires as they become problems.
I use red and black and find that it dries out and tends to crack off. Use some good old silicon sealer glue $2-$3 for a cauk gun size tube - use clear and that way you can see the joint if corrosion sets in.
if you use silicone, make sure it's not acidic acid based (smells like pickles) or it will eat copper rather quickly, silicone II calk is not acid based, and is safe, as are I'm sure some glues, but the tubes of silicone II calk are going to be the cheapest.