Car won't crank, Fusible link blown
As usual, the MAD article might be a help, as they show a simplified diagram for most of the UNfused wiring:
Catalog
Follow along. This is against current flow, but explained functionally. From the battery, power goes to the starter relay "big stud." From there the FUSE LINK goes through the BULKHEAD (RED) to the AMMETER. From the AMMETER (BLACK) power goes to the WELDED SPLICE, and back out the bulkhead to the ALTERNATOR
From the WELDED SPLICE power branches off several places depending on model/ year. Branches go to the HEADLIGHT SWITCH, the FUSE PANEL HOT BUSS, power to the IGNITION SWITCH
Notice that NONE of this above is fused or protected in any way except the fuse link!!!!
So far as "switched power" once primary power gets to the ignition switch, it feeds.....
IGNITION RUN circuits, that is powered with key in "run" position
This includes power to the cluster, which feeds gauges, oil and brake warning lamps, and out through the bulkhead to the voltage regulator and ignition system
and ACCESSORY. This power goes direct from IGNITION SWITCH to the SWITCHED BUSS in the FUSE PANEL. That much is ALSO not fused except for fuse link
As usual, the MAD article might be a help, as they show a simplified diagram for most of the UNfused wiring:
Catalog
Follow along. This is against current flow, but explained functionally. From the battery, power goes to the starter relay "big stud." From there the FUSE LINK goes through the BULKHEAD (RED) to the AMMETER. From the AMMETER (BLACK) power goes to the WELDED SPLICE, and back out the bulkhead to the ALTERNATOR
From the WELDED SPLICE power branches off several places depending on model/ year. Branches go to the HEADLIGHT SWITCH, the FUSE PANEL HOT BUSS, power to the IGNITION SWITCH
Notice that NONE of this above is fused or protected in any way except the fuse link!!!!
So far as "switched power" once primary power gets to the ignition switch, it feeds.....
IGNITION RUN circuits, that is powered with key in "run" position
This includes power to the cluster, which feeds gauges, oil and brake warning lamps, and out through the bulkhead to the voltage regulator and ignition system
and ACCESSORY. This power goes direct from IGNITION SWITCH to the SWITCHED BUSS in the FUSE PANEL. That much is ALSO not fused except for fuse link
