Boyer Bransden ignition installation

[SteveXFR]

I'm replacing the dead TCI ignition unit in my 4 cylinder 1982 GS500EZ (GS550EZ import with smaller bore) and I'm a bit unsure about fitting the crank pickup assembly. The instructions for the new parts are based on the points ignition model. Could anyone give me some advice please?

I've attached a couple photos of the new and old parts together (the smaller one without advance is new)

http://www.boyerbransden.com/pdf/KIT00090.pdf

[Duckndive]

You need to remove all the original ignition components from the timing back plate on the bike

and the original trigger , bob weights and springs from the advance retard unit shown in your pic,s on right and bottom 

then replace with the new parts as per the instruction's etc 

[SteveXFR]

Thanks @DuckndiveI see now. I couldn't work out how those parts came off the back plate, I just needed to pull a bit harder.