Wiring rear speakers into Mk4 Van

[CoupeUK]

Hi,

I'm doing a mate a favour by fitting some 6x9's into the bulkhead of his Mk4 Astra Van. I need help with the wiring!

So far the speakers are in the bulkhead but I need to know where to wire them into - I could tap into the Iso on the back of the stereo and run cables down either side but i'd rather know if theres somewhere closer to the bulkhead that I can tap into.

There is wiring from the ISO into the loom but i'd like to know where it ends in the car??

Cheers in advance,
Paul

[autosparks]

It will probably end at the main connector block in the passenger kickpanel where the wiring then runs onto the back