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Alternator wiring

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31 Dec 2023 09:38 #253175 by tomcat
Alternator wiring was created by tomcat
I am planning to upgrade the alternator on my 1991 Santana Samurai from 45 to 70 amps.
It is appreciated this will not be a simple "plug and play" operation.
Existing wiring is as attached picture. Does not match up with information from wiring diagram information I have.
Advice appreciated on how to go about checking wiring runs. Thanks. 

Attachments:

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31 Dec 2023 13:36 #253181 by Phaeton
Replied by Phaeton on topic Alternator wiring
Found this wiring diagram which seems to suggest there are only 2 wires, yours looks like more, but they could just be doubled up.

Wiring Diagram

The larger of the wires go direct to the battery, the smaller I suspect will just go through the ignition warning like, what connections does the new alternator have?

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31 Dec 2023 13:55 - 31 Dec 2023 13:57 #253182 by tomcat
Replied by tomcat on topic Alternator wiring
 
Thank you for your response.
New alternator will have connections as in picture attached
Attachments:
Last edit: 31 Dec 2023 13:57 by tomcat.

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31 Dec 2023 21:23 - 31 Dec 2023 21:26 #253189 by facade
Replied by facade on topic Alternator wiring
That is a Nippondenso alternator.
The correct waterproof plug is about a million pounds,
e.g. store.alternatorparts.com/c1850-denso-ro...epair-connector.aspx

but you can bodge something with the correct size Lucar clips, or get one out of a Toyota- try and get as much of the loom as you can, it saves buying wire...


Wiring should be
 



No idea about your current wiring, most likely the warning lamp is white with red trace.


 

If it suddenly breaks, go back to the last thing that you did before it broke and start looking there :)
Attachments:
Last edit: 31 Dec 2023 21:26 by facade.
The following user(s) said Thank You: Phaeton

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31 Dec 2023 22:30 - 31 Dec 2023 22:32 #253190 by tomcat
Replied by tomcat on topic Alternator wiring
 

Thank you for the additional information.
Have located a Denso connector on ebay which I plan to try and use.
Attachments:
Last edit: 31 Dec 2023 22:32 by tomcat.

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01 Jan 2024 00:31 #253191 by yakuza
Replied by yakuza on topic Alternator wiring
The samurai usually got the green round denso connector when new.
My older 84 SJ 410 did not have one so when I put the newer alternator in it I just used the std spade connectors.

Was planning to splice in a denso plug, but the spade have not fallen off yet so maybe later.

Norway 2005 Jimny M16A VVT, 235 BFG MT, 2" Trailmaster, ARB rear lck, 17%/87% high/low gears.
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02 Feb 2024 16:43 #253969 by lesgrandepotato
Replied by lesgrandepotato on topic Alternator wiring
I’ve just fitted an alto like this to my SJ. 
The big change is you need an ignition live to the ‘T’ plug instead of it being all just lives. Fly lead from the coil will do it…

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