The 4-Gauge Wiring Harness is the recommended power lead for Pierce 12V bale spears and hydraulic power units. Heavy 4 AWG copper handles the pump's full current draw without voltage drop. Three lengths cover most truck and trailer runs: 8 ft, 20 ft, and 25 ft, each with battery clamps and ring terminals already installed.
What length wiring harness do I need for my bale spear?
Measure from the battery to the pump's positive terminal, then add a foot or two for routing. For most pickup installs the 20 ft is the safe default. The 8 ft is for trailer-mounted pumps with a battery on the trailer. The 25 ft handles long-bed flatbeds and tool-truck setups where the pump sits well behind the cab.
- 4 AWG (4-gauge) copper power lead, sized for full pump current
- Three lengths: ABSHNB4 (8 ft), ABSHB4 (20 ft), ABSHB-254 (25 ft)
- Battery clamps on the source end, ring terminals on the pump end
- Direct fit for the Gooseneck and Bolt-in Truck Bed Bale Spears
- Also works for Pierce 12V hydraulic power units up to the same current rating
For the bale spears this harness powers, see the Gooseneck Truck Bed Bale Spear or the Bolt-in Truck Bed Bale Spear.
