2012 DRL's on at night?

On cars with DRL in the headlights rather than dedicated DRLs, they come on at 50% power. So, yeah, they won't provide enough illumination to possess an advantage.

 

I have 2012 Prius and I was thinking of the same thing, to have DRL on with head lights.
I have solid electrical background and I think this is pretty easy to do, I even started figure out how to, so here is what we need to do:
connect DRL relay coil to headlight relay coil, so when your headlight relay is on it will activate DRL relay and have them all ON.

If you open relay/fuse box under the hood you will find DRL relay on the bottom of the box, towards the front of the car.
All I have to do is find the low beam headlight relay and connect coils(run wire between positive of the H-Lamp relay and positive of the DRL relay coils).
One note: you have to use diod between relay coils, so if you turn just the DRL, they stay on without the headlights. you want power to flow only one way from the headlight relay to DRL relay but not back.
also if you wan to have an option not to run headlights and DRL together you can always install switch in the cabin that brakes the wire I was talking about.

Now the question: where is the low beam headlight relay on 2012 prius???

thanks

 

Scooter4n

Did you ever get this drl mod figured out?
Do you have a DIY?

Thanks

 

Never did.
YOu can probably do that by going magor rewiring, but once I go to the dealer for service, and they see something like that, my warrenty out of the window.
I hope there is easy way of doing this. Some kind of a jumper, fuse or something.

ANYONE???

 

The DRLs don't have a cutoff to reduce glare to oncoming drivers, so it would be inconsiderate to have them on at full brightness at night. That is why the OEM led DRLs are reduced in brightness at night on cars equipped with them like the European vehicles.

 

I'm interested in this as well

 

Couldn't you just cut the wires going into the drls.. Use the fog light switch and harness and connect it to that to get the same effect? Just always leave the fogs on?

 

i see what your saying. so wire the drls to a switch for always on. that would word. I was just hoping for a jumper simple solution.

 

Yah .. I hate messing with the own relays.. Sometimes they are controlled by an ecu.. Easier just to bypass it..

 

if you cut wires to DRL, you turn them in to the fog lights, they will not work as DRL anymore, and you need to add fog switch and relay, to much work.

Anyone with work around the DRL to have them as DRL and fogs? Looking for simple fix...

Like I post it before, once you turn headlights, power to DRL relay is completely shot down, completely, to the coil and power leg of the relay. Something under dash probably another relay desables that under hood DRL relay.
Anyone has under dash relay diagram?

 

^ you could always just leave them on ALL the time.. Drl during the day time.. Fogs at night.. What's the difference?

 

In order to have the DRLs on during the day & at night, u just need to remove the 12v + wire on the connector near the bumper & connectivity to a 12v power source when in ready mode.

I don't think that the DRLs are bright enough to cause unwanted glare at night to be a problem.

 

hmmm, interesting idea.
Ill look in to that. I would like this fogs to be fused and all, but still.
I can just go to the relay box under the hood, and jump this DRL power wire from the relay to the READY power and call it good.
Hmm, test time..

 

SO went under the hood, was looking for 12vdc power during ready mode and did not find one.
All of the fuses always under power.
All of the relays inside of that fuse box are not related to the ACC mode.

I would like to tap off of the power that headlights or parking lights working, but cant find any.

 

There is a fuse under the hood. Let me find u a pic

 

thanks guys keep up the great work. post up when you find it.

 

Here is a pic I borrowed from El Niño. This is te fuse that becomes hot when in ready. Don't worry about the ground.

 

If anybody needs help, let me know. I can do the wiring for u if we're close enough.