Shiftlock

Hello! Have an R32 Skyline with an RB20 and an Apexi Power FC. Just wondering if anyone has the answer as to why the memory is being lost from the FC when the car is turned off? I believe it's due to incorrect wiring, does anyone have a colour wiring chart for this engine and computer? I only have a really basic black and white one with numbers that isn't overly useful. If anyone could help it'd be greatly appreciated, Thank you! Helen