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Looking for info or link to wiring diagram of 1987 Glendale MH chassis. Mostly focusing on the alternator. This one has a 2 plug design. One plug has 3 wires other has two wires yet to find an external voltage regulator. Guy who sold me the MH had a spare alternator but it only has 3 terminals. The large battery one and a small flat two plug that says Stator and field. Read lots of info on 3 wire aftermarket stuff, remote voltage sensing wiring on another section of this site. What am I seeing with this 87? It could be someone has already modified it. Found out already that the present alternator bracket will not allow alternator to be removed with removing the rad. Long pivot point Bolt hits rad long before bolt clears alternator. There has to be a better way to deal with this situation. Both air pumps are gone so lots of bracket space pending suitable alternator pulley alignment issues. It would appear that someone has changed the engine pulleys already as well. Alt gas a two Grove pulley but only one being used. Holy Dina Doodle modification time.
It appears that it is a Motorcraft 65Amp the regulator looks like it is on the external back side the little black plastic connector with 3 pin out "A, S, I "F784HD 438-3 and ground here to test. To me that is the regulator the other connection has a three pin two of which are sideways, with and unreadable cast 3 letters. The other is stamped STA which to me is a Stator connection point. So what is what and why.
Last edited by Behemoth Beast; Jul 23, 2022 at 02:13 PM.
I only have manuals for 1985 and 1988. 88 with a 5.0 uses a serpentine belt while the 85 uses standard V belt. Can you look here aT RA and see if you can identify which alternator you have? https://www.rockauto.com/en/catalog/...generator,2412
Okay well there is some alterations to the charging system for sure. The alternator 5 wire needs a decoding to se what goes where. I would like to find the E350 wiring schematics for a 1987 earlier. Any link, anybody?
Tempted to run 2 alternators. The one I have the bone stock G2 style 65 amp with 5 wires and it obviously works. It's just getting a bit old an might need brushes and bearings. The replacement that came with MH is a Dixie A-217 70 amp but only 3 wires. So is it a 1 wire design? I need to cross reference these two critters to get a better plan. Engine bay has 2 batteries Generator compartment will have 2 AGM style RV Deep Cycle.
Last edited by Behemoth Beast; Jul 25, 2022 at 07:13 AM.
It's a 460 with Holley carb and has a charge/discharge guage with a second battery under hood and third under frame midway back. Alt is a 5 wire 2 plug model 65 amp Ford. Spare alternator is a Dixie A-217 70 amp one plug with 2 wires and hot bat post connector. And the replacement A-217 is an external regulator design. Original has integrated voltage regulator on rear of alternator. A-217 has Terminals for Stator and field.
I was toying with the idea of running both alternators and splitting up the loads, one on camper duty the remote sensing version and put the bigger 70 amp one (A-217) on for the engine main aux battery. Still need some basic wiring schematics to get the mysterious stock parts decoded easier. Of course this only works if the terminals are what I think they are. The parts counter fella could no find any exact unit to fit it.
Well I have a ford service manual for my 88 as well as the Ford EVTM to go with the manual. I found this info in the EVTM. I have a 85 Ford service manual but no EVTM to go with it. I looked through the 85 manual and all of the alternators had external voltage regulators so there was no point in posting info from there.
Hey that is great info to begin to decode what is going on with this cab chasis. I took the A-217 down to a local alternator repair shop today, I didn't know we still had one in this city. It was easy for the fella there to sell me the correct regulator and required connectors to get it working on the test bench and get me headed in the right direction for the adaptation part. Same fella is going to service the original alt new bearing brushes clean test etc. Unfortunately it won't be ready until next week Tuesday/Wednesday dud to the holiday weekend.
