The bulbs are not expensive if you know were to look. Do not go to the dealer. You are not going to find a listing for the vehicle at a parts store for these bulbs so you have to match them up. The 14 volt bulbs work just fine and for the price I would just replace them all while you have it apart. Check the below links and click on the "data sheet" to get the dimensions for the bulb to see if it will fit and match what you have. If that is not the right size then click the "Mouser catalog page" to find other bulbs to check the size for.
http://www.mouser.com/ProductDetail/JKL ... d9foUA4%3d" onclick="window.open(this.href);return false;
http://www.mouser.com/Search/ProductDet ... ckOQ%3D%3D" onclick="window.open(this.href);return false;
Last summer I just replace all of the bulbs in our villager van climate control. Ford does not sell the bulbs and wanted $375.00 for a new controller. I matched these up and they work like new. The Villager van took the #560-CNW123 and I bought 10 of them at $0.59 each for a total of $5.90 plus shipping. I also bought LED lamps but 2 of the bulbs locations in the controller were not deep enough for the LEDs to fit.
If you are looking to change the color then you could try some LED lamps. Look toward the bottom of this page to match the holder. Watch the length, because LED bulbs seem to be longer and may not fit. Also watch the beam angle on LED's because the light may not defuse like a regular bulb will.
http://www.superbrightleds.com/cat/inst ... ter-gauge/" onclick="window.open(this.href);return false;