110 300TDI under bonnet switch live.....

_Stingrey_ · Nov 22, 2017

Going to fit some new LED headlights this weekend. They come with a daylight running light facility that operates of a switch live. Where is the best place to take this feed from under the bonnet? Want to try and make the install both neat and easy without having copious amounts of wire trailing everywhere.

zeaphod · Nov 23, 2017

The fuel pump solenoid is a switched live. Not designed to carry much current though, you may need to use a relay for the lights.

Gmacz · Nov 23, 2017

Why would you want your lights on in daylight. Switch them on/off with the headlight switch.

mick the builder · Nov 23, 2017

Gmacz said:
Why would you want your lights on in daylight. Switch them on/off with the headlight switch.

They are supposed to be on during the day. DRL.

dag019 · Nov 24, 2017

mick the builder said:
They are supposed to be on during the day. DRL.

Even if the light unit is designed to be DRL the question still stands

Gmacz said:
Why would you want your lights on in daylight.

DRL are in my opinion for people who are too lazy to drive properly and switch their lights on. They are also not that much use as DRL only light the front lights, taillights are just as important and do not come on until you switch on the sidelights. If you wanted DRL on your defender you would be better off hooking up the sidelight circuit to an ignition switched relay so you get both front and tail lights lit on the ignition.

mick the builder · Nov 24, 2017

dag019 said:
Even if the light unit is designed to be DRL the question still stands

DRL are in my opinion for people who are too lazy to drive properly and switch their lights on. They are also not that much use as DRL only light the front lights, taillights are just as important and do not come on until you switch on the sidelights. If you wanted DRL on your defender you would be better off hooking up the sidelight circuit to an ignition switched relay so you get both front and tail lights lit on the ignition.

Yes and no.
I think your right about rear lights coming on aswell as fronts. I assume that DRL,s are for pedestrians, cyclists and the like who are liable to pull out or cross in front of the vehicle.
Not so much too lazy to put lights on, just forgetful / stupid.
Volvo and saab got it right, lights on with ignition.

Gmacz · Nov 24, 2017

Land rover got it right, lights on when you want them on.

alexc2701 · Nov 24, 2017

I don't see why you'd want perm live. Just put on sidelights circuit and turn on sidelights when get in;
My van ones more annoying soon as you turn on ignition headlights come on so you have to turn to sidelights unless you want headlights always on. Seems bit pointless giving you a light dial when you can't even turn them off

110 300TDI under bonnet switch live.....

_Stingrey_

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zeaphod

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Gmacz

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mick the builder

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dag019

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mick the builder

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Gmacz

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alexc2701

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