Read the Shop Manual Chapter as suggested. Will need to study it more to better understand some of it.
Didn’t get much time on the project today otherwise. But, did check that the lighting switch was off. Also, disconnected the cig lighter wiring completely and reran the test as 47 Chev recommended yesterday, same result with resistance shown. Also confirmed there wasn’t a problem created by a body part as described by Lightholder.
Checked the generator and voltage regulator as recommended by Volfandt. Both tripped the circuit breaker HRL suggested using.
Regarding the fuse placement: it was used at that point in the wiring after having seen one used on another guys truck at a show. He said he’d done it as a quick disconnect and theft deterrent. Said he’d used it that way for years without any problems. The light switch that came with Sparky didn’t have a fuse buss, despite one being shown in the Shop Manual wiring diagram. So, I figured that location from the starter to the ammeter would work. Since this wiring troubleshooting learning challenge began, an inline fuse was added at the light switch.
Thanks to all for helpful suggestions.