There are some advantages to using crimps & split bolts with Hi-Tensile wire. Probably most solid & permanent connection for jumper wire is use #CT4 OpenTap.
Connectors and Tensioners
RAMM Flex Fence – How to Splice Flex Fence with 12.5-Gauge Wire Links
How To: Install & Connect the Tension Spring
Interchange Part Number: Repace for 5C3Z-14A303-AA Quality: Made of high quality material, the auxiliary switch wiring is long lasting and stable
FSHero Riding in-Dash Upfitter Auxiliary Switch Panel Wire Harness Wiring Jumper Kit Fit for Ford F250 F350 Super Duty 2005 2006 2007 Repace for
Installing insulators on High-Tensile wire at RedstoneSupply.com
USL620PS3, Volex Power Cord
POWERFLEX PLUS YMvKf power cable
Installing insulators on High-Tensile wire at RedstoneSupply.com
Package includes--This breadboard Jumper Wires set contains 840pcs 24AWG U-Shape male to male jumper wires. Wire length 2 mm/0.08 5 mm/0.2 7
Minidodoca 840 Pcs Breadboard Jumper Wire Cables for Arduino, 14 Values, 2 mm/0.08-125 mm/4.92 U-Shape Magnetic Jumper Wires Assortment kit & 20Pcs