Received my telemetry module,so took a few pics to show fitting for those having doubts about the ease of conversion.
First off I drilled the holes for the led and binding button.I used the nameplate area,as it seemed just made for the panel.Also 2 2mm holes for fitting screws.You could actually glue the panel in with hot glue,but I thought I'd make the effort to tidy things up a bit
Since there was plenty of room,I decided the 2way switch could fit neatly beside it.
Here's how it looks from the front.Unfortunately,it also shows the moulding lug,but you'll have to look past that.
Next I soldered the 3 wires in place on the board.From top to bottom:ppm-yellow,negative-black,positive-red.
It's not in the photo,but i secured the wires at the edge of the board with a dab of hot glue.See,Bruce,I do listen to you
You do need to be a bit careful here,the lands are close together!
Finally,the whole module in place.
And finally,finally,success.all working as it should.
Hope these pics will help anyone who's a bit unsure.As long as you have a smallish soldering iron(mine's a 40 year old 25watt X-Acto jobbie),it's easy peasy.
Awaiting bouquets and brickbats about butchery,etc.