Once i had sleeved everything up, it was time to get brave and apply some voltage, i used a bench supply to start with to limit current to about 3A.
All was looking good, so i connected the battery up.
Actually almost did a little wee with excitement when i realised it all works again after i attacked the guage cluster with pliers and a soldering iron

everything on the car still works, had a little panic at one point thinking i'd buggered the indicators somehow, but soon realised i had just forgotton to plug in the flasher relay when i put the dash back