I've asked around about this with no luck. On a parts website I want to order a new wiring harness for my 56 lo-boy. There is a reference to either with or without ground cables. I have no clue what they are referring to. Here is the body of the text. Any clarification appreciated.
Wiring Harness Assemly - 6-volt with 7 cables for systems without ground cables and tractors
with a voltage regulator on the following tractors: Cub (up to serial number 210000), Cub Lo-Boy
(up to serial number 10000). Manufactured to restoration standards.(Regular price $66.60, your
cost $60.55) (Part No: 354252R92).
Wiring Harness Assemly - 6-volt with 7 cables for systems without ground cables and tractors
with a voltage regulator on the following tractors: Cub (up to serial number 210000), Cub Lo-Boy
(up to serial number 10000). Manufactured to restoration standards.(Regular price $66.60, your
cost $60.55) (Part No: 354252R92).