Quick Splices?

First time I saw those "insulation displacement connectors" (IDC) was in the 1970's when I rented a bumper-mounted tow hitch for my 1969 Dart. U-haul connected the trailer lights using those. I was just a college kid so didn't know they were f'ing up my car's wiring. Once the insulation is gone, the copper strands can corrode, plus it leaves a place to kink and break the copper, touch something to short, ... Those IDC connectors also come in many accessory kits (radio, ...). I never use them. I always solder and heat-shrink. I even solder crimp connectors since I have had crimps come loose (shouldn't if properly crimped, but). I also hate the butt-crimps which most mechanics use. How many times have you seen an old Mopar with all the steering column wires cut and a mass of butt-crimps where the connector was because that was the only way the gomer could figure to replace the turn signal switch? It isn't hard to release the pins of the twin-lock connector (1960's Mopar) like one should. IMHO, the only place to use IDC connectors is on ribbon cables inside electronics like PC's, and even there they stopped using them.