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Electrical connector size

  • adguy2112
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Electrical connector size was created by adguy2112

Getting ready to rebuild the wiring harness out of this RT3 I've been working on lately. In order to change out the sleeving I'll need to put on new connectors. Vintage Connections lists 4mm as mid 1970 and 3.5 mm bullets as late 1970 Japanese bikes. Can anyone verify which size would have been used in 1973? Seems the 4mm is what they say fits but thought it would be best to make double sure. 
28 Nov 2022 14:28 #1

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Replied by msavitt on topic Electrical connector size

www.amazon.com/gp/product/B07FCG92NM/ref..._title?ie=UTF8&psc=1

I have been using 3.9mm bullet connectors, which seem to mate up perfectly with stock Yamaha connectors
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28 Nov 2022 14:47 #2

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Replied by 1971DT250 on topic Electrical connector size

Forum member DEET makes complete harnesses with new wire, sheathing and components.
The hours spent riding my Enduros is not deducted from my life span.
Last edit: 28 Nov 2022 16:33 by 1971DT250.
28 Nov 2022 16:29 #3

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Replied by adguy2112 on topic Electrical connector size

I’ve seen his work and he is truly an artist. I actually like fussing with wiring but I only just learned recently there may be different sized bullets. I bought the sheathing from him last year and he’s creating a duplicate frame very decal for me. Good suggestion though. Thank you!
28 Nov 2022 22:53 #4

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Replied by Gr8uncleal on topic Electrical connector size

The 3.9mm (sometimes referred to as 4mm) are what I use.

From my limited experience of working on other makes of bike, the early Hondas use the 3.5mm.
29 Nov 2022 00:13 #5

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Replied by Brzn on topic Electrical connector size

DEET told me 4mm several months ago, and they attach to the existing connectors just fine.
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29 Nov 2022 04:25 #6

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