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Wales
by Joske Vermeule, September 1
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Jun 14th, 2026
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Joined: Sep 2019
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L - Learner Plates On
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OP
L - Learner Plates On
Joined: Sep 2019
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A solution for spare relays (2018 Plus 4) Reading various stories of Morgan owners who have had failed relays, which of course happen when most inconvenient, I decided I ought to carry spares. This involved a) identifying what relays, b) where to get them and c) where to keep them. Now I am lucky in that I have a 2018 build Plus 4 (so this should apply to all Plus 4 from 2014 onwards), there are only three relays, two of which are the same and all three are under the bonnet in an aluminium box with the fuses and ECU. a) There are two diode protected changeover relays (type RY18) for the Fuel system and the Immobiliser, the other relay is for the wipers (search using 191955531). b) Sourcing a changeover relay was easy £3, The wiper relay was more tricky but got a used VW Number 19 relay 191 955 531 for £6 c) Where to keep them? I purchased two 9 pin relay base holders for £5 and these slid in either side of the existing ones. ![[Linked Image]](https://www.tm-img.com/images/2020/06/13/20200613_132656.md.jpg) Before ![[Linked Image]](https://www.tm-img.com/images/2020/06/13/20200613_133406.md.jpg) After So for a total of £14 I now have spares being carried ‘in-situ’.
Tim
Plus 4 2018
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Joined: Nov 2015
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Just barreling along Needs to Get Out More!
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Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,683 Likes: 493 |
Excellent job 
Jon M
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Joined: Jul 2007
Posts: 27,816 Likes: 749
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,816 Likes: 749 |
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Aug 2011
Posts: 7,553 Likes: 88
Talk Morgan Guru
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Talk Morgan Guru
Joined: Aug 2011
Posts: 7,553 Likes: 88 |
What a neat solution.
I keep two spares in the tool tray and one in the glove box!
The only breakdown I’ve had was a failed fuel pump relay. Fortunately, I was carrying a spare.
Bud
4/4. Stanley
Bud
4/4 "Stanley"
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Joined: Feb 2016
Posts: 8,683 Likes: 413
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,683 Likes: 413 |
Important they are diode relays for any cars that employ an ECU. Equally important to wire the polarity sensitive relay coil of such correctly if this is part of an additional/after-market installation.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: Sep 2010
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Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Sep 2010
Posts: 1,511 Likes: 21 |
For what is worth I have a large diagram of the relay connections folded in the glove box,in case it is dark so I can swop the relay will little light.
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Joined: Jul 2007
Posts: 28,904 Likes: 352
Salty Sea Dog Member of the Inner Circle
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Salty Sea Dog Member of the Inner Circle
Joined: Jul 2007
Posts: 28,904 Likes: 352 |
Neat solution to carrying spare relays.
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly
'11 MINI Countryman Cooper D All4
'90 LR 90 SW
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Joined: Jun 2015
Posts: 2,093 Likes: 74
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2015
Posts: 2,093 Likes: 74 |
Great idea, labelling them. Incidentally, Are your fuse boxes A & B labelled the wrong way round by the factory, as I have seen on a couple of other GDIs.?
Doug
2011 Plus 4 in Rich Maroon
1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900
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Joined: Jul 2007
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Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
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Also be aware at least on a 2006 Roadster the relays also supply power to the ECU. Mine failed but lights etc worked , only the ECU wasn't working & the starter wouldn't turn over. . Despite having spares in the car neither I or the two mechanics who looked at it dreamt that it was the relay. we though it was the ECU or the immobiliser.
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: May 2016
Posts: 194 Likes: 5
L - Learner Plates On
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L - Learner Plates On
Joined: May 2016
Posts: 194 Likes: 5 |
Important they are diode relays for any cars that employ an ECU. Equally important to wire the polarity sensitive relay coil of such correctly if this is part of an additional/after-market installation. +1 To that.
Why is there only one monopolies commission??
Rob B.
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