We've posted the start to your search. READ the MAD article and download a service manual. We can step you through SPECIFIC tests. You MUST find where you are losing power. Don't guess
"Is it the ammeter?"
How would I know? Without making tests? As I said earlier, the trouble is going to be right there in that MAD diagram. It's going to be battery cables / connections, fuse link, bulkhead connector, ammeter, or the welded splice.
Turn on the headlights
Anything? No?
Go around and wiggle the bulkhead connector. Any difference?
Find the RED wire going from the starter relay ...........through the fuse link..........into the bulkhead connector. Stick a meter or test lamp in there. Any voltage? Yes?
Trouble can be in the "other half" (interior side) of the bulkhead. go inside the car. FIND that same connector Any power? No? You have found it
Any power ? yes? Might BE the ammeter. Time to get dirty. Read the service manual. Drop the column. Get the cluster out of the dash.
POST BACK
You cannot just stand there and look at it. You have to get your hands dirty. You have to check stuff.
Either that, or you can pay me thousands of dollars to fly down there, more hundreds for motel rooms, and put up with my abuse. And.........it will be unrelenting. When I was younger, you would have had to buy me beers.
