I used these for the instruments as they have LEDs on the side and top. Some only have them on the side. Got them through ebay from China but I think I've now seen similar in the UK, even Halfords sell colour LEDs.
Cheers Paul,
1976 TR7 2.0 FHC, ACG 3115 - Java Green (on the road)
1976 TR7 2.0 FHC, ACG 2367 - Carmine Red (on the road)
1980 TR7V8 3.9 DHC, Orient Blue (on the road)
1977 TR7V8 3.9 FHC rally car, ACG 35005 - Tahiti Blue (complete, no MOT)
www.TR7.co.uk