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Author: Subject: DRLs
myke pocock

posted on 15/6/21 at 07:30 PM Reply With Quote
DRLs

I want to fit DRLs to my Mk 3 MX5. I have the small light units that will fit into the lower air intake but need the operating unit that will turn them on when the ignition is turned on and then dim them when the headlights are turned on. can anyone recommend a suitable unit please? I have seen various on ebay but am not sure they will do what I want and am wary of ebay stuff.
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adithorp

posted on 15/6/21 at 09:18 PM Reply With Quote
Do they need to dim, couldn't they just go off?
You could achieve that with an ignition switched feed to put them on and a relay triggered by the sidelights to turn them off.





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40inches

posted on 15/6/21 at 10:38 PM Reply With Quote
quote:
Originally posted by adithorp
Do they need to dim, couldn't they just go off?
You could achieve that with an ignition switched feed to put them on and a relay triggered by the sidelights to turn them off.

That is exactly what I did, doesn't need anything more complicated

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cliftyhanger

posted on 16/6/21 at 05:53 AM Reply With Quote
quote:
Originally posted by adithorp
Do they need to dim, couldn't they just go off?
You could achieve that with an ignition switched feed to put them on and a relay triggered by the sidelights to turn them off.


I think you use a 5 pin relay to do that? about 2 a pop.

However, on my spitfire and the boss's MX5, the DRLs are just fed from an ignition live. Not mentioned at MOT time.

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adithorp

posted on 16/6/21 at 09:40 AM Reply With Quote
Yes need a 5pin





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Mr Whippy

posted on 16/6/21 at 11:14 AM Reply With Quote
Personally I prefer the headlights to come on when the ignition is turned on. DRL are a stupid idea that just causes people to drive in the fog with only those on! On my Up they are LED and so bright it wouldn't be the first time I've went off down the road at night forgetting to even turn my lights on! My Nissan is much better with the headlights coming on automatically but tbh they should just come on regardless.
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myke pocock

posted on 16/6/21 at 11:04 PM Reply With Quote
Thanks for the replies but I would need a wiring diagram to do that. I can do the wiring no problem but the technical design bit is beyond me!
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nick205

posted on 17/6/21 at 02:38 PM Reply With Quote
Once you've got your DRLs sorted will you be moving on to some of those snazzy indicator strips that swoosh along the car (instead of a good old blinking indicator)?
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gremlin1234

posted on 17/6/21 at 03:41 PM Reply With Quote
quote:
Originally posted by myke pocock
Thanks for the replies but I would need a wiring diagram to do that. I can do the wiring no problem but the technical design bit is beyond me!


if using led running lights, and the rest of the system uses conventional bulbs, it would be possible to 'ground' the running lights via the side lights. so side lights on means running lights off.
I don't recommend this solution because people will find it difficult to fault find,
however a similar was method used on some cars for the indicator dash repeater.

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myke pocock

posted on 17/6/21 at 04:11 PM Reply With Quote
nick205 wash your mouth out with soap and water!!!! Strobing indicators are an invention of the Devil. My reason for fitting DRLs is that I intend to tour through Holland, Germany and Austria and just wanted extra protection when driving on the continent.
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adithorp

posted on 17/6/21 at 05:49 PM Reply With Quote
Not a bad move. I wasn't a big fan of DRLs but when I switched to LED headlights they can with them. Once fitted it was immediately noticeable how much difference they make. Far fewer cars pulling out or turning across in front of me.

They're also more visible in daylight, from a greater angle than if you use (the focused) dip beam headlight.





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nick205

posted on 18/6/21 at 10:48 AM Reply With Quote
quote:
Originally posted by myke pocock
nick205 wash your mouth out with soap and water!!!! Strobing indicators are an invention of the Devil. My reason for fitting DRLs is that I intend to tour through Holland, Germany and Austria and just wanted extra protection when driving on the continent.



Noted - strobing indicators are indeed the work of the devil

DRLs - a better idea.

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JeffHs

posted on 20/6/21 at 08:09 PM Reply With Quote
I fitted DRLs after I drove in convoy with my wife up the A6 in Derbyshire. It was a bright sunny day but there is a lot of shade in parts. She said I disappeared when in shade. I used a standard 5 pin relay and it works a treat but I've never managed to crack the clever trick of switching the DLRs off when the indicator flashes
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