Ignition light Issue

Talk about the E-Type Series 2
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JerryL770
Posts: 451
Joined: Sat Dec 09, 2017 2:58 pm
Location: Northants
Great Britain

#21 Re: Ignition light Issue

Post by JerryL770 » Thu Feb 17, 2022 7:28 pm

Stevedavies wrote:
Wed Feb 02, 2022 8:34 pm
The 3AW unit was a fragile component. I replaced the ignition light with an electronic version. This is used on motorbikes and is a led which has a built in voltage ripple detector ie it detects the ac to dc conversion performed by the alternator. Normally the light is powered on. When the car starts then the voltage ripple is present and the light turns off. Led fits in the speedo housing. Great low power, reliable replacement for the ignition warning light
Does this require any connection to the 3AW or is it just a single connection from the alternator with an earth as well?

Can you give us an ID please? TIA.
Jerome Lunt
1970 S2 FHC - Dark Blue, Red Interior, MX5 Seats
2008 MX-5 NC PRHT

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Stevedavies
Posts: 27
Joined: Sat Oct 26, 2013 2:08 pm
Wales

#22 Re: Ignition light Issue

Post by Stevedavies » Sat Apr 09, 2022 5:57 pm

Jerome, sorry only just seen your question! No there is no connection to relay. This is literally a 2 wire device, ground and supply. As I mentioned it detects alternator working ( therefore assumes battery us charging) by detecting ac to dc ripple on voltage.

Regards
Steve
Series 1.5 roadster
Series 2 roadster

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Stevedavies
Posts: 27
Joined: Sat Oct 26, 2013 2:08 pm
Wales

#23 Re: Ignition light Issue

Post by Stevedavies » Sat Apr 09, 2022 6:04 pm

Jerome, you can see details at ICM.com( improvingclassicmotorcycles.com)

Regards
Steve
Series 1.5 roadster
Series 2 roadster

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