Ignition light not going out

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Graham
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Location: Wirksworth , Derbyshire

Ignition light not going out

Post by Graham » Wed Jul 18, 2018 8:27 pm

I have a problem on my lj200, the ignition light stays on, I put a meter across the dynamo and it was about 1.9 to 2.0 volt then connected the dynamo terminals together and took a reading of between 13 and 16 volt I guess this means the dynamo is ok. I joined the A &A1 cables together and took a reading from the D in the box and this was less than 2 volts. Tried adjusting the regulator with no diffence then tried another old regulator and got the same results. Any ideas folks?

qantasqf1
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Re: Ignition light not going out

Post by qantasqf1 » Wed Jul 18, 2018 11:52 pm

Graham wrote:
Wed Jul 18, 2018 8:27 pm
I have a problem on my lj200, the ignition light stays on, I put a meter across the dynamo and it was about 1.9 to 2.0 volt then connected the dynamo terminals together and took a reading of between 13 and 16 volt I guess this means the dynamo is ok. I joined the A &A1 cables together and took a reading from the D in the box and this was less than 2 volts. Tried adjusting the regulator with no diffence then tried another old regulator and got the same results. Any ideas folks?
Graham, if you suspect it’s the regulator it’s easy to test in the car or on the bench (better!). Clean the cutout and regulator points with fine wet or dry. Next, connect an ohmmeter to the F and D terminals. This should show a closed circuit (no resistance). Press down the regulator armature and the ohmmeter should fall back to about 60 ohms if memory serves - significantly, at any rate. This proves the regulator points are OK. Next, connect the ohmmeter to the D and A terminals. This should show an open circuit because the cutout points are separated when at rest. Press down the cutout armature and the ohmmeter should show a closed (connected) circuit. If not, the cutout points are not clean or their gap is too wide. Next, with all wires disconnected from the control box apply 12 volts to the D and E terminals. This should energise the cutout and regulator coils so their cores will magnetise; testing either with a screwdriver or similar for magnetism will tell you if they’re OK. If one or both are not then that coil is U/S. All this is assuming you’re confident the various connections in the charging circuit from dynamo to battery are OK, including the earth wire from the E terminal which must be connected firmly to the chassis. Gap settings for the contacts depends on the type of control box which may be a Lucas RB106?

Graham
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Re: Ignition light not going out

Post by Graham » Thu Jul 19, 2018 7:22 pm

I think both of the regulators have at it.i tried what you said and the coils did not magnetise and the resistance did not alter when I did the resistance check. I cleaned everything up. Is there a modern replacement for these as there are old ones on eBay but the reviews are poor .

Graham
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Re: Ignition light not going out

Post by Graham » Thu Jul 19, 2018 7:46 pm

Looking on eBay and all the RB 106 regulators are negative earth. Did they do a positive earth one or are they all the same?

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John-B
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Re: Ignition light not going out

Post by John-B » Thu Jul 19, 2018 7:56 pm

Trouble with your regulator? Go electronic, easy to fix and no trouble afterwards. See this topic and my post at the bottom of the first page viewtopic.php?f=4&t=1784&p=10453&hilit= ... nic#p10453
Peter at http://www.dynamoregulatorconversions.com/ does electronic regulator conversions for most models, using your regulator box and terminals. For my SP250 it cost about £200 but is worth every penny.

Graham
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Re: Ignition light not going out

Post by Graham » Thu Jul 19, 2018 8:34 pm

Thanks john! I am going to invest in one of these. Just the job.

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John-B
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Re: Ignition light not going out

Post by John-B » Thu Jul 19, 2018 9:10 pm

.... having recommended an electronic regulator, I have no idea if it will solve your ignition light problem. All I can say is that my regulator started behaving oddly and fell apart due to corrosion when I cleaned it. I couldn't adjust a new one to work properly so I sent it off for electronic conversion and it's been no trouble since.

Charging and discharging works properly and the ignition light comes on before starting the car and also when the revs go down to about 600rpm. It may be a good idea to ask Peter at what revs the electronic regulator is set to show the ignition light.

It's your risk!

Peter at Classic Dynamo & Regulator Conversions asks you to do some tests on the dynamo, battery and wiring before ordering. You then send him your regulator stating whether you have 6 or 12V, positive or negative earth and type of dynamo (2 brush or 3 brush, etc.).
He takes out the innards and inserts the electronic regulator connecting to the same terminals and drills ventilation holes in the back. He sends it back to you and recommends that you flash the dynamo, see http://www.dynamoregulatorconversions.c ... dynamo.php . Remember that if you connect the regulator incorrectly you could burn it out instantly.
http://www.dynamoregulatorconversions.c ... ulator.php
The above is just a brief summary.

JT7196
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Re: Ignition light not going out

Post by JT7196 » Thu Jul 19, 2018 10:27 pm

Hi I fitted one of those electronic Regs to my Lanchester as I have to say that it’s absolutely brilliant. Even with the lights and electric cooling fan turned on there’s still a charge go8ng into the battery .

Cheers Al :D

Graham
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Re: Ignition light not going out

Post by Graham » Fri Jul 20, 2018 4:50 pm

I just went on the site and got a new one, the old ones had large chips out of them and not been used for over 30 years. Only question asked was dynamo output, I also ordered some flashing trafficators from them.

Graham
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Joined: Sun Feb 21, 2016 12:05 am
Location: Wirksworth , Derbyshire

Re: Ignition light not going out

Post by Graham » Thu Jul 26, 2018 7:55 pm

Converted reg fitted and ignition light out and ammeter reading 15. Result . Plus new Coverdale carpets fitted and brand new hub caps .

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