Don2138 Posted January 5, 2009 Share Posted January 5, 2009 Hi All,I have just done a search and cannot find ref my question below which surprises me as I expected it would be a common question. There is lots of stuff about the Alternator change but not the wiring unless I have searched using the wrong question, if so does someone have a link explaining what is required.Would I be correct if replacing the early Alternator with the later type all I need to do is to connect the thick brown wire to the new alternator and connect the brown/purple to the alternator ( Ignition warning lamp ). All I will need to then do is to disconnect ( unplug ) the relay control box on the inner right wing. I will of course make sure that the plug from the relay control box is insulated with tape. Sounds a bit too easy or am I missing something ( apart from many brain cells ). Many thanks, Don Kennedy Link to comment Share on other sites More sharing options...
mikeyb Posted January 5, 2009 Share Posted January 5, 2009 google dynamo to alternator conversion - plenty out there!http://www.mgcars.org.uk/mgccz/technic/alternat.htm Link to comment Share on other sites More sharing options...
thescrapman Posted January 5, 2009 Share Posted January 5, 2009 Stags had Dynamo's????? Link to comment Share on other sites More sharing options...
Deleted User Posted January 5, 2009 Share Posted January 5, 2009 It's not a dynamo to alternator conversion, it's an early alternator to later alternator conversion. Early alretnators had a separate control module, just like a dynamo. Link to comment Share on other sites More sharing options...
Don2138 Posted January 5, 2009 Author Share Posted January 5, 2009 359 wrote:Hi All,I have just done a search and cannot find ref my question below which surprises me as I expected it would be a common question. There is lots of stuff about the Alternator change but not the wiring unless I have searched using the wrong question, if so does someone have a link explaining what is required.Would I be correct if replacing the early Alternator with the later type all I need to do is to connect the thick brown wire to the new alternator and connect the brown/purple to the alternator ( Ignition warning lamp ). All I will need to then do is to disconnect ( unplug ) the relay control box on the inner right wing. I will of course make sure that the plug from the relay control box is insulated with tape. Sounds a bit too easy or am I missing something ( apart from many brain cells ). Many thanks, Don KennedyI made no mention of a dynamo, obviously a “visual” typo but the question still applies, Would I be correct if replacing the early Alternator with the later type all I need to do is to connect the thick brown wire to the new alternator and connect the brown/purple to the alternator ( Ignition warning lamp ). All I will need to then do is to disconnect ( unplug ) the relay control box on the inner right wing.Many thanks, Don Kennedy Link to comment Share on other sites More sharing options...
mikeyb Posted January 5, 2009 Share Posted January 5, 2009 sorry Don, I didn't read your post carefully enough! I'm not sure of the answer having not done this conversion myself (but Colin aka scrapman has recently!). A browse at a later wiring diagram should help - late alts are simple - big brown wires to solonoid/battery, smaller (brown + purple flash?) to warning lamp.you may find a bit of re-looming in order if your batt or warning lamp wires go through the reg box. Link to comment Share on other sites More sharing options...
stagnant Posted January 5, 2009 Share Posted January 5, 2009 DonI assume we're talking 11acr to 18 acr? If so, there's four existing wires to the old alternator, the thick brown wire to the centre large terminal, the brown/yellow to the small terminal, the other 2 wires cut and tape up, unplug wires from 4tr control box and discard box, tape up wires, remove ignition control box, connect the brown/yellow wire to the brown/purple wire the ignition light should now come on, if it works cut the rest of the wires and tape up. Link to comment Share on other sites More sharing options...
thescrapman Posted January 5, 2009 Share Posted January 5, 2009 I converted 15ac to 17acr.All totally reversible.I made a new heavy brown cable, unplugged the original one from the 4-way plastic connector thingy, and plugged in the new cable.Taped the original alternator plugs to the loom.Unplugged the regulator and plugged a new signal wire into plug from the oldregulator box and into the back of the new alternator.Then wrapped a bit of tape round the rest to keep the plug clean.CheersColin Link to comment Share on other sites More sharing options...
Don2138 Posted January 10, 2009 Author Share Posted January 10, 2009 359 wrote:Hi All,Would I be correct if replacing the early Alternator with the later type all I need to do is to connect the thick brown wire to the new alternator and connect the brown/purple to the alternator ( Ignition warning lamp ). All I will need to then do is to disconnect ( unplug ) the relay control box on the inner right wing. I will of course make sure that the plug from the relay control box is insulated with tape. Sounds a bit too easy or am I missing something ( apart from many brain cells ). Many thanks, Don KennedyIf it helps anyone I have done this today exactley as above and it works a treat.Don Kennedy Link to comment Share on other sites More sharing options...
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