The PCIII is attached by velcro to the RHS of the battery near the top. An earth cable then attaches directly to the battery. You then feed the connectors through to the other side of the bike underneath the airbox. Looking from the right hand side of the bike (with the bodywork off!!
) you will see a round connector on the underside of the airbox near the front. You simply disconnect the bikes loom via this connector attach this to the PCIII loom and plug the whole thing back into the socket in the airbox. It's as simple as that. The whole process took about 15 minutes most of which was spent trying to fit my XL hands into a less than XL gap to fit the connector! As a tip - I found I was able to gain a bit more working space by loosening the jubilee clip on the breather hose and removing if for a few minutes.
As for how much more power who knows?! I was due to take the 749s to be set up at PDQ Motorcycle Developments but the bikes still going nowhere following Cadwell! Will report once it's been put through it's paces in a few weeks time (4 weeks waiting list for dynos)