its good to see a new guy actually helping out, and with something inteligent to say

 

I got a question for ya jm5464,

Regarding the first diagram, I know it still allows for the highbeams to work by pulling on the lightswitch lever. Now, typically, if you push on the lever all the way forward, it also activates the highbeams. Would that also work with the first wiring diagram? I think it would since the high beam circuits are separate from the low beam and park light circuits. Please correct me if I'm wrong.

 

When you turn the key to ignition/ accessory (depending on which wire you use as the trigger) or when the car is running the entire headlight/ parking light/ High beam/ fog light switch works as if it were stock.

 

I understand...but the mod is for when the engine is turned off the headlights/park lamps turn off too w/o having to turn the light switch off. Now the question pertains to when the engine is off (keys removed from the ignition), stock wiring still enables the use of highbeam lights, either by pulling (momentary highbeams) or pushing down (steady highbeams) on the lightswitch lever. Now when I alter the stock wiring according to your first diagram, will the highbeams work the same way? That's basically what my last question was implying.

Based on my understanding of the headlight schematic that I posted above, the entire headlight circuit is wired to a hot source (that's why the headlights stay on when you turn the engine off w/o turning the lightswitch off). From the hot source fuse, you have two leads: left headlight - red/yellow or red, and right headlight - red/white. From there it goes into the headlight switch and from the headlight switch, the wires multiply into 4: left & right headlight low beams (2 wires), left & right headlight highbeams (2 more wires). So if you connect the ignition trigger relays here at the left & right headlight lowbeam wires, then the high beam functions will remain the same as if the mod was never performed because the relays that we are wiring in is not altering the current path to the highbeams. The mod should only affect the lowbeams and park lamps. I hope all this makes sense.

Correct me if I'm wrong jm5464.

 

As the diagram is now it would interupt all the power going to the headlight, highbeam, and parking light circuit when the key is off or out. So, to answer your question; no the highbeam switch would not work if you were to pull or push it. This is because the power is cut off before the switch where there are 2 wires running to each headlight circuit (left and right). At that point the wires have no distinction between high and low beam, only left and right. The reason I did that was so if someone were to turn off their car with the high beams on they would be shut off too (so they wouldn't kill their battery). If you would prefer to still have the highbeam switch active when the car is off I could draw a diagram that would interupt only the headlights and parking lights after the switch.

Let me know what ya think,

-Justin (jm5464)

 

I was thinking of the same exact thing regarding what you said about if someone were to turn off their car with the high beams. But then, what's the probability of that even happening? I guess that's just based on the individual. I never drive with my highbeams nor do I ever forget to switch from highbeams to lowbeams. Plus, a blue-lit highbeam indicator between the guages should, and usually do, catch my attention if my highbeams are on by mistake. So based on my own personal preference, I would install the ignition trigger relays after the lightswitch. I know how to do it, no need for a diagram. Thanks for offering and thanks for verifying things for me.

 

Man thats a lot of trouble your gowing thru, Get a switch for it that looks like a noss switch or somthin

 

Here is my diagram of the auto-off headlight mod, for those who are interested. This will automatically turn off the headlights (lowbeams) and park lights when you shut off the engine. The mod will still allow the highbeams to function for those who'd like to light up a dark area and needs emergency lighting. If you are in the habit of driving around with your highbeams on, then this mod will not be for you.

The wiring color code is for 93-98 Maxima's w/o DRL only. The schematic is for illustration purposes only. Two of the relays you see in the picture are what you will be connecting inline of the left/right lowbeam leads, from the lightswitch to the headlamps. The other relay will be connected inline of the parking light lead, from the lightswitch to the rest of the parking light circuit. Perform the mod at your own risk.



RD = red
GRN = green
L.GRN = light green
YL = yellow
BK = black
BL = blue
IGNITION LEAD = black/white