Triton T90si - Installing New Pump

[nullarb]

I've just bought a new pump/motor for a Triton T90si on the internet but the electrical terminal assembly on it is different to the one in the existing (old) shower. On it, there are 2 terminals - one front left, to which a blue wire is connected, and one back right, to which the brown wire is connected. But on the new pump there are 3 terminals available - 2 on the front, one on the back left.

I've asked the supplier for advice but he hasn't responded yet. Any ideas which 2 do I attach the existing 2 leads to?

Thanks!

 

[seco services]

brown at rear blue at front.