Had a few instrument bulbs burn out so I thought I would try out some red colored lights to get an effect similar to the speedo/tac in Mazda6 adds. I ended up using 5 24n type bulbs from AZ that are yellow tint. I darkened them further with a red marker before installing in the little holders. The guages now have a nice orange-red hue to the numbers with the pointers being a slightly darker red. Looks kind of cool for a $6 mod.
