Polarity of on/off switch
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6th Gear
Joined: Mar 2015
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From: Indianapolis, IN
Polarity of on/off switch
So I'm adding cruise control to my 2013 Road King Police. I bought a Harley on/off auxiliary switch to turn cruise on. It has a grey wire and a white wire with a blue stripe.
So I've got a dumb question: Does it matter which side of the switch I wire to the "hot" wire and which I wire to the ECM? That is, should I use the grey wire to wire to the power source and use the white/blue wire to wire into the connector which goes to the ECM? Or vice-versa? Or does it even matter?
It goes without saying that I'm not much of an electrician, but I keep thinking it shouldn't really matter. It's on or it's off. The switch completes the circuit in the "on" position and doesn't in the "off" position. So what difference does it make which wire is which? But I'd really hate to be wrong and mess something up, The H-D "instructions" that came with the switch are no help whatsoever. They don't even talk about wiring it - just how to mount it in the housing.
So, help needed!
- Steve H.
So I've got a dumb question: Does it matter which side of the switch I wire to the "hot" wire and which I wire to the ECM? That is, should I use the grey wire to wire to the power source and use the white/blue wire to wire into the connector which goes to the ECM? Or vice-versa? Or does it even matter?
It goes without saying that I'm not much of an electrician, but I keep thinking it shouldn't really matter. It's on or it's off. The switch completes the circuit in the "on" position and doesn't in the "off" position. So what difference does it make which wire is which? But I'd really hate to be wrong and mess something up, The H-D "instructions" that came with the switch are no help whatsoever. They don't even talk about wiring it - just how to mount it in the housing.
So, help needed!
- Steve H.
Last edited by Steve Hastings; Apr 5, 2019 at 01:42 PM.
Thread Starter
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6th Gear
Joined: Mar 2015
Posts: 13
Likes: 0
From: Indianapolis, IN
Thanks for the feedback. That's what I thought.
All the wiring is done now for cruise control. Tuesday I'm going in to the Harley dealer to get my ECM "flashed" to activate cruise. Leave on a motorcycle trip to the Blue Ridge Mountains on Wednesday!
- Steve H
All the wiring is done now for cruise control. Tuesday I'm going in to the Harley dealer to get my ECM "flashed" to activate cruise. Leave on a motorcycle trip to the Blue Ridge Mountains on Wednesday!
- Steve H
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simplewell
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