I used florescent orange spray on mine Tony.
Sweet hood on that cuda. What kind is that???
There is a brighter bulb for use in the 4 for illumination . SlantSixDan can provide the number. I didn't write it down but I did purchase for my panel.
Providing a sufficient ground is crucial for any though. Pot metal is not a optimal conductor then chrome plated screws in black oxide coated U nuts placed on painted steel all adds up to measurable resistance. Add a ground wire on both printed circuit boards. Might be all you need and surely less expensive than 4 dollar per bulb(s).
Nice job on the speedo.......now you'll be able to go 30mph faster LOL.
Here's a thread w/ some info on the dashlight bulbs or search more of slantsixdan's posts. He's the lighting master :sign7:
http://www.forabodiesonly.com/mopar/showthread.php?t=129870
wanna sell that 120 mph?
Not pickin here Tony, but ya gotta get a 67 tach...the one you got doesnt do the car justice!! No offense!!