In Cockpit timing adjustment on Lightspeed ignition

[gmcnair]

Hi Guys,
I installed a cockpit potentiometer as per Lightspeed on my Plasma 2+ ignition. If anyone has done this I have a quick question. Is the Full Retard Timing position at 0 ohm or the 9.27 ohm position I'm getting from the potentiometer.
Regards
Gary
Thailand.