Only the later E body cars had the fuse box integrated with the firewall connector. All the older cars, the box was separate, mounted various ways under the dash, so you could easily pull them down to service
If you DO have power into the box, you have part of the battle won.
First you can download factory service manuals, and aftermarket wiring diagrams free over at MyMopar. Some of those manuals came from the guys here
MyMopar - Mopar Forums & Information - MyMopar Tools/Reference
A good read......even if you do not do this mod, is this "Mad" electrical article, as it gives a good insight into primary power:
Catalog
Of interest in that article is this diagram:
While the diagram is incomplete, and simplified, it gives an idea of power distribution
"The path" power takes into the car is
Battery........fuse link....... (RED WIRE) bulkhead connector......ammeter.......through the ammeter.......and out ON THE BLACK WIRE
Next, notice the WELDED SPLICE. This is a factory splice a few inches from the ammeter in the black wire. It branches off and feeds (depending on model/ year)
Main power into ignition switch
Headlights ONLY power to the light switch
Main unswitched power into the fuse panel
Now the fuse panel has TWO busses. One of them is hot (ABOVE) fed from that splice.
The second buss is ACCESSORY power fed from the ignition switch, so the switch must be in "run" or "accessory."
First thing I'd do is give the fuse panel a good hard look........
You have hot power on the one buss, I guess
Do you also have power to the other buss with the key in "run"
Then make sure the fuse clips are clean and not rusty, the fuses good, and power on both sides
NOTE!! There is one fuse "at one end" of the box that is a "trick". This is the instrument lamps fuse It will NOT have power unless....
the tail fuse is good
the light switch is in park or head
the dash dimmer is turned to the left
That fuse is between the dash dimmer control and the dash lamps so the above conditions must be met, or it will not get power
Once you get that far, chase down each circuit individually, and look for cut / spliced / hacked wires along the way. Post back to this thread
