While I was fixing indecisive heater control servo in a Toyota Ist, I discovered a wiring horror left a by a wire-twisting moron:
In my opinion wire twisting from above is lazy, stupid, and dangerous! Unless, of course you want to set your car on fire. They didn’t even bother to properly apply insulation tape.
Untangling the mess:
Cutting off the twists:
Feeding in supporting heat-shrink:
Splicing the wires properly before soldering (a variant of Lineman’s splice, give it a gentle tug after twisting):
Soldering the wires (just enough of solder, do not “blob”):
Loop and heat-shrink unused wires: