'1994 E350 alternator charging?
Started the engine for the first time in 3 months. The dash light for the charging circuit goes out when the engine is running but the voltage reads 12.5 (on several meters.) I noticed previously last...
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The faint YELLOW line is the B+ battery voltage power and sense lead wire. This is the "A" wire connected to BATTERY. Not switched, always hot.
The "S" wire connects to that little terminal APART from the regulator on the rear case of the 3G. Look around the rear edge of the alternator and you will see it. One wire run between the two points.
The "I" connection at the ASI connector at the regulator runs to a light bulb, warning dash light. Into the bulb, out the other terminal and to IGNITION.
If your Voltage regulator IS or WAS colored WHITE stop the music. This is a digital dash version. This needs a different hookup.
Likewise STOP if your rig has a VOLTMETER instead of a warning light. This means NO LIGHT AT ALL not merely if it has a voltmeter along with a warning light. This too, needs a different hookup.
The diagram above is for a GRAY color voltage regulator, and idiot light setup.
Hope this helps
