Re: Wiring ammeter into conversion
The OE design ammeter is actually a millivoltmeter, and as Fred suggests, gets connected at the horn relay buss bar and the other lead gets connected at the junction block next to the battery. If meter reads backwards, swap the leads at the back of the ammeter.
As Roy suggests and Fred did the same, both added a voltmeter. Hooking a real voltmeter up is pretty simple, a dash ground is good and pick off point is your choice. You can use the IGN spade from fusebox, or ACC terminal, as either position will be off with the key in the OFF position. Dependent upon gauge design, minmal current will be drawn with a modern gauge, less than 80 milliamps, if hooked to battery or alt BATT stud or BAT spade of fusebox. An external digital ammeter, your Fluke meter or Beckman, maybe Actron, don't know if this brand will measure low enough, on your additional selected voltmeter will show you the amount of current drawn, even if it's across the battery posts to test, will show you how long the battery charge will last, as in eons.
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