Westone Bass identification and wiring problems.

Hi, I have just had a Westone donated to me to restore and want to identify the model and then need a wiring diagram to sort the electrics as someone has tried to convert it to have an active option instead of the standard passive one.
Really grateful if you can help Jennijog.

Here are some more photo's of the bass.

Looks like a Thunder 1 which has had a pre-amp circuit added to it.

http://www.westoneguitars.net/basses/thunder/

We don't seem to have a T-1 wiring diagram, but here's a Concord 1 diagram which would seem to be about right...

http://www.westoneguitars.net/fixme/wiring-diagrams/concord-i-bass/

Yep certainly a Thunder.

A Thunder Jet model going by the all black finish, what's left of it.

The actives are more than likely an improvement

Does it work and how does it sound?

Hi again and thanks for the identification really grateful. 
Looking at all the pictures of the models I did think it could be a Thunder but was slightly confused as mine only has two controls (volume & tone).
I put some flat wound stings on it and it sounds fantastic with the passive pick-ups but haven't tried the active one yet as I didn't want to burn anything out.
Yes the black has taken a battering the lacquer has started to chip off all down the neck so is going to have to be stripped and re-done as for the back of the body there are so many battle scars that I'm not sure what to do with them yet.
Anyone any ideas on best way to tackle the lacquer problem.

Oh forgot to say the truss rod cover is not original, just one I made to fit.
Now I know it is a Thunder am in the process of making an ebony one which I hope to get Thunder 1 engraved onto.

Going by the control cover,black neck and the pot positions I'd say Thunder Jet.

Compare it with this Jet I owned.

Yes that looks like it, Nice paint job was it like that or did you have it done?
I have a long way to go with mine but it does sound great.
Thanks for all the help, Regards David.

Oooohh... that's pretty!

Beautiful finish!

Thanks folks.

Afraid I can't take credit for the Thunder Jet finish,bought it like that.

Burl birch veneer stained green,finished with oil.