I know when this subject came up a year or so back, I put together a quick drawing on how I used to duplicate a tractor
wiring harness using a section of plywood as a guide. I recently broke down and purchased an expensive open
terminal crimper to do a half dozen or so C series harnesses for family and friends. I figured "In for a dime ,
In for a dollar" and decided to share a real life example of a harness replication jig.
The board is just a scrap piece of MDF which was either going into the garbage or was going to be
put to some temporary but significant use. Some scrap MDF shelving laying next to a C series in need of
repair and Bingo -here we are.
If the original harness can be pulled out of the tractor without too much damage, layout the
harness on the board in a logical arrangement which will make use of all the landscape on the
board.
Major connection points can be held in place with screws or rotating screen door latches.
The same latches can be used to call out major artery junctions in the harness. The latches can be
used to secure the old harness to the board and create the jig
The latches can be rotated to allow easy removal of the old
harness or the completed new harness.
Single wires can held in place with wire hold-downs used for bell cable or speaker wire.
The length of all the OEM wiring is called out and the jig allows for increasing the length of wiring as required for custom installs.
The crimpers and terminal rings should arrive early next week. I'll finish, wrap and test the new harness and post additional pics at that time.