Well, this is for you guys who bought the standard version and want to make your own HD version. Or maybe for the HD guys who don't like the idea of a 25 foot cord and need something longer, haha.
As in my Rupes 15 cable mod thread I also used a 25' 14/3 winter capable rubber cord from Princess Auto.
First, open the case, T15 torx:

Next, remove the retaining clip, T15 torx, and the grub screws, Phillips, holding the wires in place:


Cord out:

Unused ground heat shrunk for neatness:

Don't forget this gray wire that goes into the white slot:

Leads installed, with that gray wire you'll remember:


Boom, your own version of the HD 3401! Hope this helps people!
Cost: $28
Time: 15 minutes
As in my Rupes 15 cable mod thread I also used a 25' 14/3 winter capable rubber cord from Princess Auto.
First, open the case, T15 torx:

Next, remove the retaining clip, T15 torx, and the grub screws, Phillips, holding the wires in place:


Cord out:

Unused ground heat shrunk for neatness:

Don't forget this gray wire that goes into the white slot:

Leads installed, with that gray wire you'll remember:


Boom, your own version of the HD 3401! Hope this helps people!
Cost: $28
Time: 15 minutes