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Old 17 November 2024, 00:28   #1
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Country: UK - Scotland
Town: Glasgow
Make: Narwhal
Length: 5m +
Engine: Johnson 50hp
Join Date: Nov 2024
Posts: 3
Making jumper wires for Amphenol connectors on Johnson??

Hi all,
New to posting to the forum, but have read so much useful advice here - so, fingers crossed…
I have a 2000 Johnson 50hp with ignition issues. Following workshop manual diagnosis procedure, I need to make some jumper wires for the pins / sockets in the Amphenol connectors around the power pack.
So my questions…
1. Does anyone know the Amphenol spec (not the Johnson spec) for the pins/sockets? Or an equivalent that would do?
2. Does anyone know where these can be purchased in the UK - I guess I need at least 5 of each? I’m thinking of a general auto / electrical connectors supplier, rather than a marine supplier
Thanks in advance for any advice!
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Old 17 November 2024, 08:09   #2
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If you can't find an automotive source , try Farnell ( UK ) or RS Components .
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Old 17 November 2024, 08:36   #3
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Country: UK - Scotland
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Make: Narwhal
Length: 5m +
Engine: Johnson 50hp
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Quote:
Originally Posted by Bern Hanreck View Post
If you can't find an automotive source , try Farnell ( UK ) or RS Components .
Thanks for the quick response! The RS Components site looks promising. Some Amphenol possibles there - circular pins, at least.

Anyone know which is the right Amphenol connector?
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Old Today, 00:39   #4
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Country: UK - Scotland
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Make: Narwhal
Length: 5m +
Engine: Johnson 50hp
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2mm banana plugs seem to be the right size

Just posting this in case anyone else has this problem - I searched through pages and pages of different Amphenol connections on-line, bought precision calipers, checked the size of the pins/sockets on an old Amphenol male/female I have - found that no modern connections appear to be the right size.

The calipers did it though. The Johnson connectors seem to be about 2mm - and I found 10 2mm banana plug male/female connectors plus heat shrink for £6 on e-bay - far cheaper than the Amphenol connectors from e.g. RS, once postage added.

https://www.ebay.co.uk/itm/281784986980

I’ll be making up the jumper wires this weekend and using in anger to diagnose my ignition problems.
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