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MG MG Y Type - Horn relay

Our 1950 MGYA has been fitted with twin windtone hor-ns, but there's no relay in place. Would someone be able to tell me which Lucas relay is required please
A J R Felthouse

The relay on my 1952 YB is marked LUCAS Made in England SB40-1. I believe it is the original, but in any case it functions just fine.
Rocky
Rodney C "Rocky" von Dullen

Andrew,
I removed the relay from the firewall and discovered the following additional numbers from the underside:

331162 10 52

Some were rather faint, hope I read them correctly. I believe the 10 52 indicates the date of manufacture: October 1952.

Hope this helps you locate a relay for your car.

Rocky
Rodney C "Rocky" von Dullen

Thanks Rocky, job's a good 'un.
Best wishes,
Andy
A J R Felthouse

I cannot seem to find a Lucas SB40 relay for the twin windtones for much less than £90.
I wonder of anyone might know whether a close or open relay is required, and then any old relay might do.
A J R Felthouse

More Modern horn relay would work just fine. Try the type found in the Z-Series Magnettes. Most parts shops have them still.
... CR
CR Tyrell

Andrew

Look on https://www.mg-cars.org.uk/imgytr/searchebay.shtml - there are 2 on there for less than $30US.

Paul
Paul Barrow

Can somebody please tell me where the horn relay is supposed to be mounted onto the car?
A J R Felthouse

This thread was discussed between 17/11/2019 and 01/06/2020

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