Ibanez On Board Pre Amp

[ROBR]

Hi,

I have an older SR1400 with a 2 position EQ switch and active/passive switch.  I would like to upgrade this to the 3 position EQ and more importantly the active/passive switch with the passive tone control. 

I am sure that most of the circuit in mine is very similar to the upgraded version maybe an extra jumper  lead etc (and different switch), but it's difficult to tell without a detailed picture of the new bass circuit and music stores have been funny with me opening up their stock basses and pocking around.

So I am interested if any one has an info/details pictures of the 3 position switch version circuit or is selling their Ibanez SR Preamp etc.

Thanks

Rob