Ipc ign fuse. Aug 3, 2015 · The fuse is labeled as IPC/DIC in the underhood box. For the heck of it, when it acts up after starting the engine, try jiggling the ignition switch to see if anything happens. Instrument panel relay block is located below instrument panel to the left of the steering column. Cigarette lighter fuse. Mar 28, 2014 · I have a 94 Cadillac Deville. Apr 2, 2024 · My question is, why does the IPC/DIC need constant power? For the moment I've installed a jumper (with a 10a inline fuse) between the supply side of the IGN-E fuse (#22) and the feed side of the IPC/DIC fuse (#24) so the cluster doesn't get any power until the key is turned to the ign position. 2. I was driving and all of the sudden my digital gauge just went blank and my heater started blowing on hi. If nothing happens, try checking the voltage at fuse IGN 0 while the IPC is inoperative. When I test that fuse it is the only one drawing power, even after the truck has sat for 30 minutes and the BCM has gone to "sleep".