Generator wiring question

[930dreamer]

I have a Lister 20 hp diesel engine with some type of generator. Lima 6-10K is a setup I've seen online while searching. Data tag isn't readable so I'm looking at the leads.

5 & 8 connected
6 & 9
7 &?
3 is connected to a red line lead. Black, white, green connected to line leads but no number tag. Someone is interested in looking at it, so is this a 9 lead connection with a ground? (10) leads from the generator head.

 

[Axehandle2]

Sounds like high connected wye
4&7
5&8
6&9
L1,L2&L3 460 3ph green is L0 grd.

You can ohm it out to verify. Continuity with all leads disconnected will 1-4, 2-5, 3-6 and 7,8,9, to 0