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GM one wire Alternator
- Thread starter Akamphi
- Start date
jfriese
Active Member
Craig,
Why reinvent the wheel? Get the Lucas alternator and mount that came on your 1500 engine on later Spitfires. It mounts without problems, works the dash light correctly and even has the same terminals that the generator used so you don't have to change anything. Disconnecting the old regulator box is easy and the whole thing works fine.
John Friese
67 White
67 Red
Why reinvent the wheel? Get the Lucas alternator and mount that came on your 1500 engine on later Spitfires. It mounts without problems, works the dash light correctly and even has the same terminals that the generator used so you don't have to change anything. Disconnecting the old regulator box is easy and the whole thing works fine.
John Friese
67 White
67 Red
Midwest Amphicar
Worlds Largest Amphicar Destination
Raise your hand if your car went dead because of a tiny bulb,or socket corrosion or loose wire. The reason for 1 wire alternator is dependability. Plus when parts go bad, no one stocks a Lucas Alternator. So after dragging your Amphicar down to ........... You know what will happen. The GM alternator has a delightful hum whilst it works,so no need for a dim bulb. Plus Tony Oratke stocks very nice original looking brackets. Later Dave the Wave
jfriese
Active Member
Gee Dave, I've run these in 2 cars for 9 years and never had a problem but it's always a good idea to have good wiring and clean connections at light sockets. Rebuilt alternators are available, though not usually stocked, at a local (I think national) auto parts store. They are rebuilt by some national company and I can get you the part number if you'd like. They are a bit smaller than the Delco models but still put out about 40 amps and look more correct. Oh, and they make the typical alternator whine just to let you know they're working.
John Friese
67 White
67 Red
John Friese
67 White
67 Red
Tedredamphi
Platinum Subscriber
Craig,
I wired up the GM single wire marine alternator on my Amphicar a couple of years ago and made the "blue discharge light" operational. Attached is a quick pic of the alternator rewire as you have to open up that rubber plug on top and run one connector to the brown "field" input and the other over to the "big" wire.
I'm on the way out the door for a week's vacation, so I don't have time to dig out the actual schematic until I get back. I think I found the wiring schematic either on an old Amphicar Forum link or a Google search.
The alternator and "blue light" both function perfectly.
Ted
I wired up the GM single wire marine alternator on my Amphicar a couple of years ago and made the "blue discharge light" operational. Attached is a quick pic of the alternator rewire as you have to open up that rubber plug on top and run one connector to the brown "field" input and the other over to the "big" wire.
I'm on the way out the door for a week's vacation, so I don't have time to dig out the actual schematic until I get back. I think I found the wiring schematic either on an old Amphicar Forum link or a Google search.
The alternator and "blue light" both function perfectly.
Ted
Tedredamphi
Platinum Subscriber
"quick and dirty" explanation of how to wire up the alternator and blue discharge light from oldengines.org . There are probably more sources - just do a google search.
Ted
The 10SI has three terminals (including those with a 1 wire regulator).
Ted
The 10SI has three terminals (including those with a 1 wire regulator).
- The large "BATT" terminal which gets connected to your battery positive. (Or Terminal Post if your vehicle is so equipped).
- The #1 Terminal. (Marked with a "1" on the case)
- This terminal is used to connect to the dash warning light.
- For the warning light, a lamp is wired in series with a switched voltage source. During normal operation the lamp stays off. If the regulator is damaged, the #1 terminal provides ground, and the warning lamp will light. Usually.
- This terminal is also active on 1 wire regulator equipped 10SI alternators.
- This terminal is used to connect to the dash warning light.
- The #2 Terminal. (Marked with a "2" on the case)
- This terminal is used to excite the 10SI into operation. (3-wire 10SI)
- It is connected to the battery positive.
- For simplicity you can connect the #2 connector pigtail directly to the "batt" terminal on the alternator.
- The terminal is present on 1 wire regulators. Used only for those that require the stock connector to fit snugly.
Tedredamphi
Platinum Subscriber
Craig,
I wrote this up over two years ago and totally forgot about it. If you click on my alternator picture it should enlarge and show you how it is wired. My marine alternator came with a black plug over the terminals which I removed. I was able to get the pigtail from my local parts store. The black wire just runs over to the batt terminal of your alternator and the brown one goes to the brown wire from your "blue" battery discharge light in gauge.
My alternator has been working fine since installed and the only time I ever see the blue light is prior to start with ignition on.
Later,
Ted
I wrote this up over two years ago and totally forgot about it. If you click on my alternator picture it should enlarge and show you how it is wired. My marine alternator came with a black plug over the terminals which I removed. I was able to get the pigtail from my local parts store. The black wire just runs over to the batt terminal of your alternator and the brown one goes to the brown wire from your "blue" battery discharge light in gauge.
My alternator has been working fine since installed and the only time I ever see the blue light is prior to start with ignition on.
Later,
Ted
Tedredamphi
Platinum Subscriber
Borg Warner BWDPT68 or AIRTEX 1P109 connectors should fit . And this is the source that I used to wire 10si alternator and blue light up:
how to wire up the alternator and blue discharge light from oldengines.org
http://www.oldengine.org/unfaq/10si.htm
how to wire up the alternator and blue discharge light from oldengines.org
http://www.oldengine.org/unfaq/10si.htm
Cameron in UK
Member
There is a Lucas alternator "kit" on UK ebay here:
http://www.ebay.co.uk/itm/TRIUMPH-SPITFIREHERALD-ALTERNATOR-SETCONVERT-EARLIER-DYNAMO-/350889491877
This is what the Europeans use and as John says Triumph used themselves on post 1966 cars. I know Lucas seem to have a bad reputation in the States but we have had these alternators on our cars for more than 20 years and never had a problem, they have survived being very wet and even the battery connected the wrong way.
http://www.ebay.co.uk/itm/TRIUMPH-SPITFIREHERALD-ALTERNATOR-SETCONVERT-EARLIER-DYNAMO-/350889491877
This is what the Europeans use and as John says Triumph used themselves on post 1966 cars. I know Lucas seem to have a bad reputation in the States but we have had these alternators on our cars for more than 20 years and never had a problem, they have survived being very wet and even the battery connected the wrong way.
canitfloat
Member
No wheel to reinvent and like Dave says when it goes bad you can get at ANY parts store or junkyard! I changed my blue dash light to High Beam and alternator to red like it should be....apparently at the Amphicar assembly plant the floor didn't get the memo sent down from the engineers regarding this mistake?
