I use a propane torch being careful to not overdo it and burn the insulation on the wire. Btw, this is the crimper I use and I use it in a vise:
Waytekwire.com carries them. They carry heavy wall heat shink tubing from too. I bought the battery cables and terminals from Battery Cables USA.
Btw, this is the tool I used for installing the rivet nuts and it worked well:
It was the first time I had used it. I had another style before this but wore it out.
__________________
'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway
PROJECT THREAD
'83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018
PHOTO
2019 BMW 440ix - Twin turbo I6, 8spd auto.
PHOTO
'55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021
PHOTO