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down-underdisco2

New Member

• Sep 29, 2022

• #1

hi all. seems I put this question in the wrong place yesterday, so I'll try again. I've replaced the alternator on
my disco 2 TD5 and new adaptor ( couldn't find a genuine 2-wire to 3 pin female adaptor ) has 3 wires,
black, red, black. could someone tell me whether I ignore the third wire or how to connect all three to existing
wiring. many thanks, steve

 

JUKE179r

Well-Known Member

• Sep 29, 2022

• #2

What brand and part number is your alt?

 

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down-underdisco2

New Member

• Sep 29, 2022

• #3

Hi Juke. Original Denso alt. DAN 670 021080-0290. thanks. steve

 

sierrafery

Well-Known Member

• Sep 29, 2022

• #4

down-underdisco2 said:

and new adaptor ( couldn't find a genuine 2-wire to 3 pin female adaptor has 3 wires,
black, red, black. )

Click to expand...

Hi, what's that "adaptor" ? if you mean the electric connector on it's back you must connect the brown/yellow wire to pin 1 and white/green to pin 2, pin 3 is unconnected

 

Last edited: Sep 29, 2022

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down-underdisco2

New Member

• Sep 30, 2022

• #5

Hi. The adaptor is meant to replace the original connector which had brown/yellow and white/green wires into the connector which then plugged
into the back of the alternator; unfortunately, the original one fried and the only way to attach the new one is using the adaptor. So, from the back of the unit
there is a female 3-pin plug into which the adaptor is connected; at the back there are 3 wires, black from terminal 1, red from 2 and black from 3. How do I
wire the new 3 wires to existing B/Y and W/G wires? I'm living in a remote part of Australia and don,t have access to Landy wreckers or original parts, so
I often have to adapt what,s available. If someone has an original connector that they want to sell, please let me know. steve

 

sierrafery

Well-Known Member

• Sep 30, 2022

• #6

Should be obvious from my first reply how to connect the wires, the WG as to reach pin 2(middle) on the alternator's plug and the NY to pin 1

 

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down-underdisco2

New Member

• Sep 30, 2022

• #7

sierrafery said:

Should be obvious from my first reply how to connect the wires, the WG as to reach pin 2(middle) on the alternator's plug and the NY to pin 1

Click to expand...

Hi, thanks for your reply; yes, it is obvious where the N/Y and W/G are connected and it would be easy if the connector was fitted with the matching wires instead of 3 different ones. Sorry if I've wasted
your time. Steve

 

NPG

Well-Known Member

• Sep 30, 2022

• #8

As mentioned by SF, only 2 pins are needed for a genuine alternator. I would just insulate the pin 3 wire just in case you will need at a later stage - some aftermarket regulators use this pin to monitor the output, in which case it would be connected to alternator battery feed.

 

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down-underdisco2

New Member

• Oct 1, 2022

• #9

Hi. Many thanks for your reply.
regards. Steve