Hi.
This is not an easy cabling job, I couldn’t even get enough opening space to take some decent photos. Even identifying the pin connections was difficult to see. However, I do have the following information for you:
Pin 3 – Neutral out
Pin 2 – Neutral in
Pin 5 – Active in
Pin ? – Active out
I assume that the last pin is Pin 4 in your listing, it is on the left of the large coil when you view the coil in the 12 o clock position. The active and neutral leads are side by side, and on the same side. The output leads are nearest the coil.
The cable grounds are joined under the base plate.
Have fun with this wiring job, sorry I cannot give you any lead lengths to work with but I daren’t take it apart. There is hardly any free space to work with and hard enough to get the base plate back in position. The photos below might give you some clues
Good luck
Regards
Geoff

