Automatic headlight modification to add taillights - Toyota Yaris Forums

Snowy · 09-12-2010, 07:55 PM

Although I am new to this forum I really did try to search for this answer before posting. Perhaps someone knows where to find it, if it even exists. By far my biggest (and "nearly" only) gripe with my Yaris is about the tail lights not coming on when the headlights come on automatically. I believe there are reasons for everything, but this feature I just can't seem to get my head around. Surely someone must have engineered a modification to correct this nuisance by now, and if not, is anyone up for the challenge? This is an especially a bad feature if you happen to be out driving anywhere near the time of night that the bars close and were tricked into the false sense of security that all of your lights were on!

ezhacker1 · 09-12-2010, 08:05 PM

You have automatic headlights?

landrym28 · 09-12-2010, 08:12 PM

I assume you mean your daytime running lights? They come on automatically when you drive.

CTScott · 09-12-2010, 08:41 PM

Theoretically jumping the light blue wire on the DRL module's connector to pin 13 (white wire) of the headlight stalk's connector would do the trick. Doing this will feed the same pulsed ground to the taillights that is fed to the headlights when the DRLs are on. Like the headlights, they will be on, but not at full brightness.

Snowy · 09-17-2010, 12:45 AM

Sounds like exactly the solution I was looking for, thanks! I'm assuming you are referring to jumping pin 13 to pin 8?

Snowy · 09-17-2010, 12:54 AM

Quote:

Originally Posted by ezhacker1

You have automatic headlights?

yes... it seems that I do. They turn on without me turning them on, therefore I would call that automatic.

CTScott · 09-17-2010, 07:52 AM

Quote:

Originally Posted by Snowy

Sounds like exactly the solution I was looking for, thanks! I'm assuming you are referring to jumping pin 13 to pin 8?

No - Jumping pin 13 to the large blue wire on the DRL module. Pin 8 on the headlight stalk is is not the same as that.

Snowy · 09-18-2010, 10:28 AM

OK Thanks... Don't know my way around the car like it sounds like you do. I will need to search and figure out what and where the DRL module is. Actually doing the wiring is no problem for me, once I find everything.

CTScott · 09-18-2010, 10:47 AM

Quote:

Originally Posted by Snowy

OK Thanks... Don't know my way around the car like it sounds like you do. I will need to search and figure out what and where the DRL module is. Actually doing the wiring is no problem for me, once I find everything.

This thread shows its location nicely:

http://www.yarisworld.com/forums/showthread.php?t=894

09-12-2010, 07:55 PM	#1
Snowy Snowy Drives: 2 door 5-speed hatchback Join Date: Sep 2010 Location: Southern California Posts: 5	Automatic headlight modification to add taillights Although I am new to this forum I really did try to search for this answer before posting. Perhaps someone knows where to find it, if it even exists. By far my biggest (and "nearly" only) gripe with my Yaris is about the tail lights not coming on when the headlights come on automatically. I believe there are reasons for everything, but this feature I just can't seem to get my head around. Surely someone must have engineered a modification to correct this nuisance by now, and if not, is anyone up for the challenge? This is an especially a bad feature if you happen to be out driving anywhere near the time of night that the bars close and were tricked into the false sense of security that all of your lights were on!

09-12-2010, 08:05 PM	#2
ezhacker1 Drives: Decepticon - Ravage Join Date: Nov 2008 Location: San Francisco Posts: 1,462	You have automatic headlights? __________________ Check out my Build thread: http://www.yarisworld.com/forums/showthread.php?t=52274

09-12-2010, 08:12 PM	#3
landrym28 3,300+ at one point.. >:( View User's Garage Drives: 2010 Hatchback RS Join Date: Aug 2007 Location: Saint John, NB, Canada Posts: 542	I assume you mean your daytime running lights? They come on automatically when you drive. __________________ Remember, you're unique.....just like everybody else.

09-17-2010, 12:45 AM	#5
Snowy Snowy Drives: 2 door 5-speed hatchback Join Date: Sep 2010 Location: Southern California Posts: 5	Pulsed ground to... Sounds like exactly the solution I was looking for, thanks! I'm assuming you are referring to jumping pin 13 to pin 8?

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09-12-2010, 08:41 PM	#4
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Theoretically jumping the light blue wire on the DRL module's connector to pin 13 (white wire) of the headlight stalk's connector would do the trick. Doing this will feed the same pulsed ground to the taillights that is fed to the headlights when the DRLs are on. Like the headlights, they will be on, but not at full brightness.

09-18-2010, 10:28 AM	#8
Snowy Snowy Drives: 2 door 5-speed hatchback Join Date: Sep 2010 Location: Southern California Posts: 5	OK Thanks... Don't know my way around the car like it sounds like you do. I will need to search and figure out what and where the DRL module is. Actually doing the wiring is no problem for me, once I find everything.

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