How do I bypass instrument gauge dimmer and put on toggle switch

The 194 style incandescent bulb can be had in several brightnesses. I forget their numbers and which ones were the brightest. I bought several different numbers of that style bulb with various ratings and then replaced all the cluster bulbs with the brightest of the bunch.I seem to remember 157 was one of the tested bulbs. Your jobber will have a catalog.
On the otherhand, the dimmer may be faulty.