Is it single or dual axis?
Page 86 of the manual
here, right side, 2/3rds of the way down you can see the foot pedals part of the schematic.
The two pots are wired in parallel -- both have 5v to tab 1 (or 3?) and both have ground to tab 3. (or 1?)
Both pots have an output on tab 2 -- brake on ORG VIO wire, gas on ORG GRY.
This is a standard "dual axis" configuration.
What size are the pots?
Steering pot P/N 5014-12909-00 is a 5k. Twisted Quarter has them
here.
Pedal pots P/N 50-8026-00 (or 96-4916-00?) are also 5k.
Scott