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SM5 Switch Panel. Anyone repair them ?
#4
(05-02-2018, 06:27 PM)PeteUU Wrote: Hi everyone.

I have a Lucas SM5 switch panel with a broken wound resistor wire to the ignition warning light.
I'm anxious to keep the original bulb to work from the 6 volt system.

Is there anyone who could repair this by rewinding the resistor ? 

Otherwise could someone with knowledge suggest a way that I might be able to repair it by using a diode or something similar ? I have to add that I am not particularly good with electrical problems or a soldering iron so if someone could carry out the repair that would be the best option. Maybe you could let me know together with an estimated cost please.

Thank you in advance for any helpful replies.

Pete   Wink

My Lucas SM 5 panels do not have any wound resistor wire and there is no mention of it in the various articles including the comprehensive Cornwall Charging Refresher or the booklet Austin Seven Electrical Guide by Harry Hales.

Where is it located ?

The Lucas 'Spare Parts for Austin 7HP 1927-28-29-30 interestingly lists the SM3/ER Switchbox (Magneto Ignition) and the SM3/BN7 (Coil Ignition) - the designation SM5 must have arrived after this if anyone has the later Lucas listing.

The Warning Bulb SM3/BN7 is listed as SM/MES/8/9V

MES- Miniature Edison Screw.

No mention of any wound resistor here either.

I use a standards MES  6 volt 3 watt globe.

Cheers, Tony.
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RE: SM5 Switch Panel. Anyone repair them ? - by Tony Press - 05-02-2018, 09:51 PM

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