Sounds about right mate thanks for that. This one i had taken off a car in the scrapyard, it reeled all the way in and there was no way to get it back out no matter what i done. I was probably a little rough then and it blew up lol.
I have just won one on ebay so hopefully when its delievered, it wont have reeled all the way in, if it has i will fit the main part to the car and then see if it will pull out when its at the correct angle. The assembly 100% does not have any electrical fittings on it at all.
What is the pre tensioner, like a small explosive charge because they dont half go off with a bang.