for your consideration, here are a few pictures of how I added LEDs in the instruments and other interior places.
I have not been able to find the pictures of the relay installation behind the LH head light but also eliminated the Bakelite contact block, since it only ad contact points which will cause voltage drops over time.
I think the pictures will explain what I did. BTW, superbrightleds.com is where I got all my LEDs from, except the strips (Amazon) but they have them too.
LED strip covered in green electrical tape:
The other instruments just got the standard incandescent bulb replaced with an equivalent LED.
LED strips as map light and under the Mazda seats: