Lotus Elan

Electronic indicator flasher wiring

PostPost by: l10tus » Mon Nov 16, 2015 10:31 pm

I'm trying to upgrade to get a more constant indicator flash, with a usable buzzer noise, from my newly acquired electronic flasher relay.

This to be installed as a replacement for the existing 3 wire long round metal can.

The existing wiring to my UK S4 3 connection indicator flasher can, is marked up as 'L', 'P' and 'X', terminals.

Where:-

L Green / Brown is wired to 'L'
White is wide to 'P'
Dark Green is wired to 'X'

I've just obtained an electronic (LED compatible) indicator relay with a buzzer, but the wiring connections are marked up:-

31, 49a and 49

Q: Does anyone know which wires go to the numbered connections please?

Do I need to add an earth, if so how?

Regards,

Phil.
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PostPost by: john.p.clegg » Tue Nov 17, 2015 9:26 am

Phil

I don't think it is as simple as that,I ended up using three of the above ( left,right,hazards ) I'll let you know more when I dig out the wiring diagram.

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PostPost by: john.p.clegg » Tue Nov 17, 2015 9:39 am

Phil

31 is negative-earth
49 is input to operate relay
49a is output to indicators

no separate output to pilot lamp

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PostPost by: TroonSprint » Tue Nov 17, 2015 2:41 pm

I have used an electronic indicator relay too, and I agree with John's connection guide, except that my relay also has a "C" terminal for connecting to the single dash warning lamp. Simple to install and works well.

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PostPost by: stugilmour » Tue Nov 17, 2015 3:07 pm

Phil, it has been a while since I used one of that type in my Plus 2, and I can't find my diagram right now. My rewire was pretty involved, but I ended up using one flasher relay for both the turn and hazard signals. As there is no 'P' (or 'Pilot') terminal for the single dash lamp, I recall using two diodes so the dash lamp would flash when turning either direction.

Perhaps one of these would work easier with the stock Lotus wiring and still be LED compatable?

http://www.autoelectricsupplies.co.uk/p ... ategory/35

http://www.autoelectricsupplies.co.uk/f ... -ripca.jpg

Assuming this is similar to the one you have...

http://www.autoelectricsupplies.co.uk/p ... ategory/35

If converting to LED's you may have to change out the hazard flasher if your car is so equipped.

HTH

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PostPost by: billwill » Tue Nov 17, 2015 4:30 pm

See:

lotus-electrical-f38/hazard-warning-light-t29877.html#p198731


Provided that your dashboard indicator signal light is isolated & not earthed on one side, you can wire it between the left & right external indicator lamps. The bulb then flashes in sync with the external lights by 'earthing' through the bulbs on the other side of the car.. It doesn't use enough current to light those up as well.

Cunning that! :D
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PostPost by: TroonSprint » Tue Nov 17, 2015 5:05 pm

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PostPost by: l10tus » Wed Nov 18, 2015 7:28 pm

Gents,

Thanks for the replies, all very much appreciated.

I did what I thought I wouldn't do, and jumped in head first !

Should have checked more throughly !

The reason why I bought that one is, I really need a warning buzzer that I can hear over the noise of the engine, (which this electronic one has) I'll probably not be using LEDs for any of the lamps, as they ain't quite got it sorted yet, IMHO.

However, the electronic one should give a more reliable operation, with the buzzer as a bonus?

I do have a plan on the wiring, so I'll report back when finished (perhaps!)

Meanwhile, if anybody has any 'easy' wiring solutions - let me know, eh?

Regs,

Phil.
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PostPost by: john.p.clegg » Wed Nov 18, 2015 9:49 pm

Phil

The standard flasher unit with a small 12v buzzer in parallel with the pilot light ?

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PostPost by: fatboyoz » Sat Nov 28, 2015 9:55 am

Phil,
Can't really agree with your opinion on LEDs. I have been using them for several years. If you look here, you will find my previous post in regards to LEDs.
lotus-electrical-f38/led-headlights-t30936.html
If you are at all concerned about your presence and visibility on the road, you will give LEDs some serious thought.
Cheers,
Colin.


l10tus wrote:Gents,

Thanks for the replies, all very much appreciated.

I did what I thought I wouldn't do, and jumped in head first !

Should have checked more throughly !

The reason why I bought that one is, I really need a warning buzzer that I can hear over the noise of the engine, (which this electronic one has) I'll probably not be using LEDs for any of the lamps, as they ain't quite got it sorted yet, IMHO.

However, the electronic one should give a more reliable operation, with the buzzer as a bonus?

I do have a plan on the wiring, so I'll report back when finished (perhaps!)

Meanwhile, if anybody has any 'easy' wiring solutions - let me know, eh?

Regs,

Phil.
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PostPost by: l10tus » Mon Dec 14, 2015 12:28 pm

Colin,

I just replaced the bulbs that have a habit of melting the light lenses with LED's, and hoped to improve the 'be seen' ability of the rear lights, so these were replaced:-

Front side lights
Rear number plate lights
Rear stop / tail lights

But there are issues, intensity of light is low and the colour is all wrong !

I thought I had I learnt my lesson converting all the lamps in the house to LED's that is, I found that only 'Warm White' replacements were of any real comparison to the Halogen ones they replaced.( took a lot of swapping to get anywhere near the correct light levels and colour rendition!)

IMHO, I found that 'Daylight' or 'White' ones just didn't give any meaningful uplift in lighting levels (quite dim !) and were completely the wrong colour rendition.

Unfortunately the LED's alternatives on the car now suffer in the same way.

I've purchased the most powerful LED's in warm white for the side lights - but if I'm being perfectly honest they ain't really the full ticket !

That is, they are a bit too 'stark' white and not really as bright, but do run cooler - so won't melt the lenses.

The rear festoon number plate lights are too bright ( I used 3 SMD type warm white) !! - I'll downgrade these next as they really overpower the tail lights.

I took advice and used Red LED's for the rear stop and tail lights, but again to be honest, not really powerful enough to compare with the halogens they replaced.

They certainly are not as bright in either department!

So, my experience has not been very good so far.

I'll run them for a while and hope other cars don't run over me!

LED - "Less Efficient Definitely"

Regards,

Phil.
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PostPost by: billwill » Mon Dec 14, 2015 12:32 pm

But the Halogens would be brighter than the original bulbs, so maybe you are now closer to original ?
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PostPost by: l10tus » Mon Dec 14, 2015 3:43 pm

Bill,

Sorry it's my terminology, when I say halogen I should have said Tungsten (originals)

Regards,

Phil
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PostPost by: Stevie-Heathie » Sat Jan 09, 2016 7:55 pm

Phil are you sorted now?

If not give me a buzz (excuse the pun), I would be happy to assist. I fitted an electronic flasher in my S3 today (as part of my upgrade to LEDs) and it went smoothly. Used a flasher unit from bettercarlighting.co.uk and it was effectively a like-for-like change-out. My experience might be useful irrespective of whether you have LEDs or not.

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PostPost by: l10tus » Sun Jan 10, 2016 1:09 pm

Steve,

Yes, sorted now.

I used diodes in the wire to the indicator light, powered directly from the LHS and RHS indicated repeaters on the wings.

The buzzer works great, (not too loud), and the flash rate is really consistent.

Well pleased with the upgrade, very worth while, IMHO.

Thanks,

Phil.
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