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post #1 of (permalink) Old 02-05-2001, 11:12 PM Thread Starter
 
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Electrical help!

Does anybody know if I can get electrical diagrams of the charging system for 1990 and 1996 on the internet? here's my problem: I dropped a 1996 5.8L in my 1990 that had a 5.0L. I had to use my original wiring harness because the '96 is totally different. Anyhow every thing has mached up except for the alternator. On the 90 motor it has 2 seperate plugs one is for regulator and the 2nd is for 12v power I think, but on the 2nd plug there is 3 wires 2 large and one small. On the '96 alternator there is one plug for regulator and one large wire for 12v power I need to see the diagrams so I could splice them if possible! I tried to talk to the ford tech at my local ford dealer and they are giving me the run around. So pi$$ on them I'll find it myself. And they wonder why people don't take there vehicles to the dealer! They are a bunch of M-fers Sorry, just had to vent some anger at my local dealer.

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post #2 of (permalink) Old 02-06-2001, 08:20 AM
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Re: Electrical help!

I just dropped a 95 mustange alternator in my 90 302 bronco last night. Thanks to Technoman(journeyman). Search the bbs for 130amp Alternator for Bronco's. Anyway 90 alternator lower plug has 3 wires. 2 hot ( continuity test between solinoid and black/red wires + they are heavy gauge) connect them to the back/hot post. the 3rd wire ( could be stator wire ) on mine conected around the top to a small male thing.
www.racesystems.com/3gproj also has some great info.
good luck

post #3 of (permalink) Old 02-06-2001, 06:22 PM
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Re: Electrical help!

I think I can talk you thru this since I had to research a lot of this to put a 95 alt into my 83, but I'd have to know: which alternator and which engine wiring harness are you using???

The Haynes manual ($12 at almost any parts store) includes the complete wiring diagrams (including charging system) for both those years, and pictures are easier to follow than words.

Steve
83 Custom w/95 4.9L EFI, 78 NP435, 83 NP208, 83 D44IFS 3.07, 87 Ford 8.8ABS 3.08, Michelin LTX AT 31x10.50R15
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post #4 of (permalink) Old 02-07-2001, 01:44 AM Thread Starter
 
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Re: Electrical help!

I'm using my '90 wiring harness steve. And the 96 alternator. I'm not sure the ampage.

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post #5 of (permalink) Old 02-07-2001, 07:51 AM
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Re: Electrical help!

OK That alternator harness should only have 2 wires to connect to the truck: the big Bk-Or one goes to the starter solenoid on the battery side, and the little Gr-R one goes to the original Gr-R wire to the Alt light on the dash - it MUST be connected to the light for the alternator to work. That's about all there is to it.

Steve
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post #6 of (permalink) Old 02-07-2001, 01:46 PM Thread Starter
 
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Re: Electrical help!

Thanks again, and again, and again, and in case i forgot, again. I'll try this tommorrow.

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post #7 of (permalink) Old 02-08-2001, 12:23 PM Thread Starter
 
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Re: Electrical help!

Just put the alt. on and gonna do some finishing touches,hook up fuel inj., rad, power steering pump, new computer. I'll be firing it up on Sunday. I don't have the exhaust done yet as my previous post, It's gonna be straight manifold I don't have a Y pipe yet. besides the noise is it gonna be OK to start up with out exhaust(O2sensor also). My freind said you might see flames is this possible????

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post #8 of (permalink) Old 02-08-2001, 12:35 PM
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Re: Electrical help!

It's OK to run it for a while without exhaust, and you WILL see blue flames with wisps of orange. So make sure there's nothing plastic, painted, or otherwise inflammable where the manifolds are pointed. You can use sheet-metal shields to protect stuff for a few minutes.

Steve
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