Does any one have LED specs for Dashboard and switch light Led bulbs for TR8 and TR7 will be the same.?
Centre idiot lights and turn signal indicators use T5 or type 74 (the smaller sockets).
Dash Illumination and side marker lights are T10 or type 194 (the larger sockets).
Your BA9 bulbs exchange with type 57 leds.
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You will need the brightest led bulbs ones you can find, as the common single or triple led bulbs are not bright enough. And remember, LED bulbs only shine in the selected colour, so don't expect a white led to shine through a red or green lense. It will, but just barely. (see: https://www.superbrightleds.com/carbulb_notes.php)
Some links:
http://www.autolumination.com/
https://www.superbrightleds.com/
http://www.ultimatemods.co.uk/led-car-bulbs/12v-car-leds/
Regards,
M.