Working on the truck in my sig, I replaced the alternator and while putting it together, I realized that the T-shaped plug that goes into the top of the alt only has 1 wire in it, going to the field. Plus, I pulled the loom off the harness coming from the regulator/etc on the passenger fender and it looks to have had some previous owner splicing and such going on. Does anyone have a wiring diagram for the charging system on these setups?
I have the Moosestang/Agnem diagrams printed out, but this shows an alternator with internal regulator. I have the external one. Thanks for any help guys!
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1986 F250 2WD Super Cab XLT Lariat w/ 1996 front clip. Dually bed & van rearend (2" wider, allows spring clearance). 6.9 w/ approx 120,000mi. Banks non-wastegated turbo system, Wellman G088 glowplugs, Delphi BB injectors, Kenworth pyrometer, vac/boost gauge, electric water temp/oil psi/voltmeter mounted in dash. 3" Mandrel-bent open exhaust. C6 trans, 3.54 gears. Okiegringo idler pulley. R134a A/C conversion. WMO/diesel blend in one tank.
The other wire is used on gasser applications to send power to the electric choke. It is not used on diesels.
86 has the internal regulator, someone swapped an older alternator or maybe a whole older motor.
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1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.
Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.
*dual ASE Master Certified, Automotive, Medium & Heavy trucks*
Owner / operator, Patriot Automotive, N Ridgeville OH
Door tag is 4/1986, maybe it was one of the last to get it. Still, is there a wiring diagram for say 1985 model year out there anywhere? My local auto electric shop sold me a neat aftermarket regulator that plugs right into the top of the alternator with a little box on top that has a regulator in it, and 3 wires coming out, one for ground, one for B+, and one for a low voltage indicator light (don't have one on this truck). My only remaining question is what wire going to the regulator gives signal to the ammeter in the dash. I'm sorry if these are dumb questions, I've never been much of a charging system expert.
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1986 F250 2WD Super Cab XLT Lariat w/ 1996 front clip. Dually bed & van rearend (2" wider, allows spring clearance). 6.9 w/ approx 120,000mi. Banks non-wastegated turbo system, Wellman G088 glowplugs, Delphi BB injectors, Kenworth pyrometer, vac/boost gauge, electric water temp/oil psi/voltmeter mounted in dash. 3" Mandrel-bent open exhaust. C6 trans, 3.54 gears. Okiegringo idler pulley. R134a A/C conversion. WMO/diesel blend in one tank.
The ampmeter doesn't work off the regulator - There is a shunt circuit parallel to the main (large) charge wire.
Don't expect that ampmeter to do much, it takes a pretty large charge or draw to make them move at all.
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1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.
Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.
*dual ASE Master Certified, Automotive, Medium & Heavy trucks*
Owner / operator, Patriot Automotive, N Ridgeville OH
My 86 has the external regulator on the passenger fender-well and the wiring harness appears to be stock. The 3 times I have picked up alternators from 3 different NAPAs they have always handed me ones for the external regulator. [img]/ubbthreads/images/graemlins/shrug.gif[/img]
__________________ Red 86 F250 Supercab XLT: Longbed, 6.9l, 4 speed with DNE-2 Overdrive, 2WD, 10.25 Sterling 4:11, Reclining Highback Captains chairs with arm-rest, Holly Red pump, push-button glowplugs, Racor 645 water separator with fuel heater, K&N Air Filter, Headlight Relay Upgrade, Fog Lights, lots of extra lights, Isspro EV series: Pyro, Oil Pressure, and Voltage in a Autometer 3 pod A-pillar. Bulldog Security System with remote entry. Offset Mirror Upgrade, Remote lube TOB. Road Watch System coming soon. PB PS PW PDL CC AC IW BOOB man - Brotherhood of Oil Burners
1995 Toyota Camry DX: 2.2L, Bolt-action 5-speed, AC, PS, PB, CC.
135,016 miles: Rear-ended and totaled by an uninsured kid having a temper-tantrum 1999 Rav4 AWD 5-speed, AC, PS, PB, CC, Sunroof.
I don't know, maybe it's based on amperage, having or lacking A/C etc... Or maybe they changed sometime in the 86 model year.
I know when I worked on the line at Ford we would use up an old part and you'd get a new crate with a redesigned part..... Could happen any old time.
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1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.
Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.
*dual ASE Master Certified, Automotive, Medium & Heavy trucks*
Owner / operator, Patriot Automotive, N Ridgeville OH
It was a running change during the model year, my diesel has an external regulator, while my gasser has an internal, build dates are a month apart(that's all I remember tho... LOL) Both have towing and camper packages, and A/C.
my 91 has external, all factory wiring. [img]/ubbthreads/images/graemlins/shrug.gif[/img]
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91 F350 crew cab 4x4 7.3 ats and intercooled with cut down 2000 ps cooler, bigger turbo comp,head studs, torque cam, coated rockers , balanced. very good power.
made 218hp/461tq on a mustang dyno lasst dec with 80k on the rebuild
pyro,boost and all stock guages ignored with mechanical real ones
Fugitive sandrail. type 4 2840 turbo fi, lots of fun
The other wire is used on gasser applications to send power to the electric choke. It is not used on diesels.
86 has the internal regulator, someone swapped an older alternator or maybe a whole older motor.
So, provided a person has an external regulator on an '84, will an alternator work without the STR wire being hooked up at all? It appears that in my '84, the white/black wire comes from the T connector and travels back to a loom connector, then stops. It looks like it came from the factory this way. All other wires are in place and external regulator, with only three wires, is in place, but the alternator doesn't charge. (I don't have the original alternator and this one has never worked from the time it was installed by the owner of the vehicle.) My suspicion is that the voltage regulator is simply not working. I get voltage to it from the ignition switch (green/red wire) and voltage from the battery (yellow wire, which also parallels to ammeter,) and the orange wire going to the FLD terminal is grounding through the alternator which does work on a test bench...but the system does not charge and the FLD terminal remains neutral as the engine is running. Again, the STR terminal from the alternator is going nowhere by means of the factory wiring since there's no ECM to feed a choke signal to....
ps use the low voltage just run it into the dash to a led they can be bought at a truck stop running 12v
that would be a cool mod
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88 F-250 body,550 rear frame setup, 7.3 idi, back up camera, class 5 bumper hitch welded to frame and gusseted, front mount hitch and off road lights,93 front clip, headache rack, 37" humvee tires, ac power converter,factory buckets from quadcab, power windows and locks,cobra 29 cb w/ 102" whip, high lift jack behind seat, toolbox for the junk, visor, running lights, huge front bumper, oba,
in progress western style mirrors, holset turbo, airhorns, and some other goodies
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