I know this is not diesel engine related but don't know where else to turn. My blower control has decided to work only on the lowest setting and the highest. Position 2 and 3 provide no joy. So I went to the dealer and bought the replacement control panel (blower speed, temp, vent selector) but it has been superseded by an updated design. My old panel was hard wired but the new panel has the famous flexible printed circuit on it. The connection on the right goes to a 10 position plug, which I had to go to a salvage yard to get but now have to connect it to the wires in my truck. I am not particularly wanting to buy a years subscription to an online service just to see the wiring schematic for a 97 or so C2500. Any place where I can find such wiring details online? Without breaking the bank?