Sorry guys but Shannon is correct there is no short cut. DO NOT splice any of the wires.
You have one wire, for 32amp systems, running from the regulator all the way back to the breaker. If it isn't on the breaker then get it off where ever it is mounted and get it on the breaker opposite the battery.
Snip all the zip ties along the frame rail run the new wire, put the sheathing from the old VR wire on the new wire, with the rest put the large sheathing back over everything and zip tie everything back up clean again. Do not over tighten the zip ties.