Mine is in and works flawlessly, very easy to install the switch itself, Im still feeling good looking at the orange illumination of the 'auto' position back light.
As others including Brichall have touched the auto switch doesn't protrude from the dash as much as the original A2 switch. I thought by modifying the original surround it would somehow make the switch sit further out. It doesnt, of course, why would it ?
The switch is in the same place modified surround or not if seated correctly slotted into dash it will always sit recessed into the surround.
Just thought id point that out in case anyone else is as stupid as me
I bit off more than I could chew with the surround modification, with some clever masking (to retain the dim and headlight height adjust back lights) a rub down and re-coat of rubberized black I m confident it will look good.
Even at this stage I feel it is an improvement on the before.
My surround ring had a quick rub with a scotch pad and AC-90 to create a brushed finish to blend in with the switch accent and other A2 interior bright work.
To make this better easier next time:
A template for the cutting, a simple paper overlay using the measurements of the most successful cutter to get the enlarged aperture in the correct position.
A brushed trim ring with a deeper back lip to compensate for the reduced protrusion of the switch.
This would allow the new switch to 'lock-in' in the correct position in the dash, would retain the back lit 'auto' surround and allow the trim ring to add a neat dished edge to the modified surround in a finish to match the rest of the interior.
I'm off to upadte my sig with 'Birchall Auto Lights'