Interior Fuse Box Location: 2006-2009 Dodge Ram 3500 2008 The video above shows how to replace blown fuses in the interior fuse box of your 2008 Dodge Ram 3500 in addition to the fuse panel diagram location. Electrical components such as your map light, radio, heated seats, high beams, power windows all have fuses and if they suddenly stop working, chances are you have a fuse that has blown out. 2008 dodge ram 2500 6.7 diesel in the fuse box under the Jan 18, 20102008 dodge ram 2500 6.7 diesel in the fuse box under the hood there is a fuse its pink 30 amp and labeled ( off road - Answered by a verified Dodge Mechanic. my 2008 dodge ram 2500 6.7 cummins diesel started then cut off. After that, when you turn the key, it will not start.