Things you need:
- 1x DC Plug 2.5mm/5.0mm (Maplin order code: L49AY)
1x Single-Hole-Fixing 2.5mm DC Socket (Maplin order code: JK10L)
1x 12/1.2W instrument bulb (Don't buy from Maplin - they cost a fortune!)
or 1x Wire-Ended Filament Type Bulb (Maplin order code: WQ13P)
Some insultaing tape
4 cm² of green gel (I used a bit of some old packaging material)
2x 'Scotch' locks (cable lock connectors)
Some insulated copper wire
- A pin punch or something to mark where to drill
A minicraft drill or dremel is handy
Various sizes of drill bits
A soldering iron
2. Drill a hole in the top corner of the circuit board for the power socket taking care to position the hole so as not to damage any tracks and not to go to near the edge (there is room).
3. Mount the socket into the hole and then solder the bulb directly to the tags of the socket so that the filament will be positioned vertically above the shaft of the switch.
4. Cut the gel to fit inside the housing with a strip bent back at the top and around the adjustment hole to prevent white light leakage. Fit this into the housing using a couple of little bits of blu-tack to hold it in place. You can add a small piece of white paper big enough to cover the top three holes which will help even up the intensity of the lighting (due to the position of the bulb).
5. Solder two wires to the power plug and use 'scotch locks' to attach the wires to the 12V lighting feed to the clock.
6. Finally reassemlbe the switch (you may have to file off part of the back corner of the housing to allow the socket to fit in) and fit back into the dashboard. With a bit of luck, when you turn on the ignition your info centre selector switch will light up and nothing will go on fire!
