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am making 12v generator using motorcraft alt. # E73F-10316-AB, need to know proper wiring to batt. , also suppose to install on/off switch/not sure where though, have original wiring harness that schematic shows two wires go to fusebox & other to indash guage,( I think), unsure after that, anybody know correct hook-up? much obliged
I don't recognize those numbers. Ford alternators are generally known by being a 1G, 2G, and 3G. Those are the common ones, some of the diesels had a different one. What year truck or car did it come from? Does it take a external regulator? E7 is 1987?
the e73f # actually comes from the built-in regulator, the only other # i could find was stamped on the side of alt. =- e87fca g 18(maybe), it came of a 89-90 ranger
Dont know amps, I saw on the internet where ya can build a 12v gen. for charging batt.
to use for home,camping etc. by using a vehicle alt.& 3-3.5 hp engine. unsure of correct wiring though for this alt.the wiring harness ends up into 3 wires, 2 got to pos. of batt., the other to meter & i ground the alt. to neg. batt. ( i'm thinkn) any ideas?
thanks
close, but one wire color is different, though it seems to be the same set-up.
its off a "90" ranger 2.9 ( I believe)
also I see that the lt green/red wire goes to a volt gauge then to the ig/switch,
then back into the batt +, is this correct?
thanks
The alternator large output wire is connected to the battery all the time. The lightgreen/red wire brings the alternator "online" ready to charge. You need switched 12v on the lightgreen/red wire or it will not work. This is so the alternator will not discharge the battery through the output wire when the alternator is not turning.
The yellow/white wire is the feedback wire. This wire tells the internal regulator what the voltage level of the wiring is, and from that info the regulator throttles the alternator output.
The white/black is just a jumper to connect the regulator to the stator.
Thanks Franklin2,youve been alot of help & hate to bother ya but one more time okay?
the schematic below is exactly my color wires, I believe the blk/org goes directly to +batt, lt grn/red to voltmeter, but where does org/lt blue go? does it go to +batt as well & this is the wire that I install the switch? also I am running a ground wire from -batt to housing of alt, okay? Thanks again
I looked up a 1990 ranger with a 4.0 in a different diagram service and the above diagram does seem to be accurate except the "voltmeter" part of it.
So basically you will take a large wire and hook the black/orange to the battery +. Two smaller wires(orange/lightblue and the yellow/white) and hook them to the same spot as the black/orange.
The lightgreen/red is not correct. You do need to run it into the dash area, but you need to hook this wire one side of a light bulb. The other side of the lightbulb wil be hooked to a ignition on wire.
