Got the codes off the ecu this evening
Going from
https://www.troublecodes.net/nissan/pre88nssn/
14 speed signal not entered while engine is running
22 electric current for fuel pump is extremely low or high
23 the on/off signal from idle switch is not entered with ignition switched to ON
24 the neutral/park switch is not entered after ignition is switched to ON
31 load switches signal not entered after ignition is switched ON
Did also note the battery light is on when running, although it does appear to be charging ( 14v at battery when running)
As usual, I welcome any advice.