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  #1  
Old April 20th, 2012, 10:32 AM
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Robert Lynch
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series IIa Alt questions

So i just installed the S-10i alternator with the Pangolia Brackets (which are nice) and hooked up the Alt
when it was hooked up by the PO it looked like this - notice the white wire is attached to terminal "F"

But the wiring diagram lists it as this (white attached to "R" terminal) see Diagram

So i hooked it up as per the wiring diagram (nice shinny Alternator picture)

It starts and runs fine, the Alt is outputting 14v However the truck will not run with the battery disconnected.

So which way is right to wire it up. I added a ground to the Alt as well which was not present before.
Needed?
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  #2  
Old April 20th, 2012, 11:29 AM
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J. Michael McCaig
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This is how I have wired my GM alternators...
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  #3  
Old April 20th, 2012, 11:31 AM
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William Skidmore
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Look at TerriAnn site she has all the info you need, I ran a 10 or 12 gauge wire from the alt to some position(?) on the fuse block cause the circuit for "sensing" how much to put out is in a different place then where the old alt did. This might be why you not getting the results you want.
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  #4  
Old April 20th, 2012, 11:56 AM
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Robert Lynch
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humm - so i have it wired correctly according to the above diagram and Terriann's site
http://www.expeditionlandrover.info/...ternators.html

won't run on Alt alone though - which means trace the wires and see what the PO did i guess.

there is some drag on the engine from the clutch not being propperly blead as well but if you remove positive it imediatly stops.
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  #5  
Old April 20th, 2012, 01:16 PM
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Quote:
Originally Posted by airbornrover View Post
Look at TerriAnn site she has all the info you need, I ran a 10 or 12 gauge wire from the alt to some position(?) on the fuse block cause the circuit for "sensing" how much to put out is in a different place then where the old alt did. This might be why you not getting the results you want.
You nailed it.

The diagram shows to connect both cables together.

IMO that's a mistake because the Sense is reading the 14V alternator output.

Also, I recommend to ground the alternator.

I connected the Sense to the Starter Solenoid in my Series IIA.

Hope this helps.

P
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  #6  
Old April 24th, 2012, 11:07 PM
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Robert Lynch
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isolated the problem - missing bulb in the dash = non completed circuit for sense. new one this weekend and done.
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  #7  
Old April 25th, 2012, 08:51 AM
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which bulb?
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Old April 25th, 2012, 09:07 AM
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Robert Lynch
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charge indicator light in the gauge. I rigged a switch to test it
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  #9  
Old April 25th, 2012, 09:13 AM
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ahhh...the red one! Yep that is a problem. I have the same issue (with a generator), that my truck dies when the battery POS is taken off, my light comes on and off though...so I think I have a wiring issue, gotta trace that.
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  #10  
Old April 25th, 2012, 09:15 AM
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Robert Lynch
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probably the ground to the gauge - i need to take those apart and grease them for a good connection as well.
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  #11  
Old April 26th, 2012, 11:25 AM
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Quote:
Originally Posted by rlynch356 View Post
isolated the problem - missing bulb in the dash = non completed circuit for sense. new one this weekend and done.
Robert,

You are on the right track. The missing bulb is not allowing the switched source to energize the field windings inside the generator.

You probably meant the Excite connection, right? The sense line is used by the internal voltage regulator to determine how much voltage is present in the system.
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Originally Posted by 1971Series88 View Post
ahhh...the red one! Yep that is a problem. I have the same issue (with a generator), that my truck dies when the battery POS is taken off, my light comes on and off though...so I think I have a wiring issue, gotta trace that.
Craig,

I'll try to call you today and see if I can help you.

If the lamp is working you might have a different issue.

Quote:
Originally Posted by rlynch356 View Post
probably the ground to the gauge - i need to take those apart and grease them for a good connection as well.
What gauge? The lamp is connected to a switched 12V source, not a negative return. If you connect it the the negative return it might damage the generator.

Hope this helps.

P
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  #12  
Old April 26th, 2012, 12:28 PM
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Robert Lynch
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ah thanks - makes sense - and you are correct on the wiring
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