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Wiring Right Switch Assembly

Started by Hemi, May 17, 2025, 04:11:57 PM

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Hemi

I have a question about the wiring of the right switch assembly.
I ended up with a new "4 into 1" replacement to instal.

All the wires are colour coded which is great, however instead of a 4 wire clip attachment, there are 5 wires, 2 of which are in a 2 wire clip.

I'll have no trouble connecting the 4 colour coded wires, however instead of one blue wire, the new assembly has 2 blue wires, one of which ends in a double head to attach 2 wires.
So basically there now 3 blue terminal connections instead of just the one that went into the old clip.


I'm wondering which of the 2 blue wires to connect to the blue going through the bike from the old clip, and then what to do with the other blue wire terminal connections on the new assembly?

I think the issue is my RD is an E model.
"4 Into 1" noted on the item description that E models my require a minor wiring adjustment rather than just plug and play.

Thanks for any advice you can offer.👍
1972 CB350, 1977  RD400D, 1993 1200 Sportster, 2004 KLR650, 2010 RT1200, 2012 K1600GT, 2014 KLR650, 2014 CB1100, 2016 KLR650,  2018 WR250R, 2022 KLR650, 1977 RD400E

1976RD400C

Doesn't one of the blue wires have a black tracer?
'76 RD400 green  '76 RD400 red   '84 RZ350

Hemi

Thank you.

Just checked. Yes, the blue wire ending in a double terminal connector has a black line tracer on it.
I'm thinking that means the loan solid blue wire should be connected with the blue wire running from the original 4 plug connector running back into the bike, and the blue wire with the black tracer line and double-ended terminal should be connected to a blue wire and a black wire found in the headlight that had originally communicated with the blue wire going into the original 4 plug connector?
1972 CB350, 1977  RD400D, 1993 1200 Sportster, 2004 KLR650, 2010 RT1200, 2012 K1600GT, 2014 KLR650, 2014 CB1100, 2016 KLR650,  2018 WR250R, 2022 KLR650, 1977 RD400E

RustyRD

There is a wiring diagram in the tech library , that lead may be for gauge lighting.

Hemi

Thanks for the tip.
Strange thing is there is no such wire on the original harness, so that would mean the gauge lighting originally is coming from a different route?
1972 CB350, 1977  RD400D, 1993 1200 Sportster, 2004 KLR650, 2010 RT1200, 2012 K1600GT, 2014 KLR650, 2014 CB1100, 2016 KLR650,  2018 WR250R, 2022 KLR650, 1977 RD400E