[DeTomaso] Underhood electrical tape

[Tom Baranek]

I am looking for first hand experience with a robust tape (black) that could be used to "dress" underhood electrical wires going to connectors, etc...
I want something I can wrap around the wires (as I don't want to undo the connectors at the ends).
It seems like the black electrical tape I use becomes brittle and loses its adhesive when exposed to under hood temperatures.
I heat shrink all my solders and I have tried to find a heat shrink "tape" but have spent $30 on line and have not gotten what I wanted/expected.
Any suggestions?
Thanks,
Tom