Fitting door solenoid.. advice/experience?

[MrChips]

I've heard is a pig of a job but as my drivers side has now totally given up, it's getting interesting to use the car!
I've bought one of these http://www.racetechdirect.co.uk/tvr-car-part-m0599...
and from speaking with Racetech, it's basically the same unit as the original except it will need the spring put in place so that it returns to the closed position.

So.. any tips? I've already taken the interior panel off and its clear that the connectors are different so I'm guessing some chopping/soldering is needed to get the right connector on.

Anything else for me to watch out for?

Thanks in advance!
MrChips

[MrChips]

It's closing fine and staying closed but the solenoid is now so slow/laboured it can't open the door.
Currently doing a comedy routine of getting in the passenger side an dmr putting windows down to allow me to reach in and pull the red handle.
Unless the roof is off, then it's pure smokey and the bandit style jumping into the car.