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Wales
by Joske Vermeule, September 1
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Jun 14th, 2026
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Joined: Jul 2007
Posts: 27,833 Likes: 758
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,833 Likes: 758 |
Do you not have a separate supply for front spots and an unused switch location on the dash?
Talk to BHM they were great helping me with my start button.
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: May 2014
Posts: 5,442 Likes: 133
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,442 Likes: 133 |
Do you not have a separate supply for front spots and an unused switch location on the dash?
Talk to BHM they were great helping me with my start button. I will check on the wiring but no spare switch as I have aircon.
Keith
2013 narrow bodied + 4 Ruby.
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Joined: May 2009
Posts: 132
L - Learner Plates On
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L - Learner Plates On
Joined: May 2009
Posts: 132 |
I am thinking of fitting a pair of spot lights, Ionly want them to work when on main beam so can I connect them directly to the main beam feed or do I need a separate feed through switch and relay Definitely use a relay. I burned out the lighting stalk contacts trying something similar.
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Joined: May 2014
Posts: 5,442 Likes: 133
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,442 Likes: 133 |
Thanks for all the helpful comments
Keith
2013 narrow bodied + 4 Ruby.
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Joined: Feb 2016
Posts: 8,695 Likes: 415
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,695 Likes: 415 |
Keith, just been looking at the +4 wiring schematic for your car. Wiring is already in loom for front fog lights (look for unused blue/yellow cables under wings). These lights are controlled via an optional dash switch, plug with two wires for which should also be present (red/orange and blue/yellow).
It seems therefore much of the fresh cabling could be avoided by using existing and adding factory switch although you would still need to intercept and add relay for main beam only operation.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: May 2012
Posts: 1,705 Likes: 35
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: May 2012
Posts: 1,705 Likes: 35 |
Has anybody found a power supply that is only alive when the engine is running, it only needs to be suitable for activating a relay. Interesting requirement! Could an optoisolator connected in the ignition lamp circuit work to drive a relay?
Roger
2011 Plus 4
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Joined: May 2014
Posts: 5,442 Likes: 133
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,442 Likes: 133 |
Keith, just been looking at the +4 wiring schematic for your car. Wiring is already in loom for front fog lights (look for unused blue/yellow cables under wings). These lights are controlled via an optional dash switch, plug with two wires for which should also be present (red/orange and blue/yellow).
It seems therefore much of the fresh cabling could be avoided by using existing and adding factory switch although you would still need to intercept and add relay for main beam only operation. Thanks Richard 
Keith
2013 narrow bodied + 4 Ruby.
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