Unanswered questions about DIY ambient footwell lighting w/ headlights.
SubscribeSenior Member
Quote:
Love your lighting mods... despite the annoying Yoda-speak. Originally Posted by jowo9
Wise choice LEDs are.

Senior Member
Quote:
Hehe whoops, that was unintentional. But it kinda sounds good when I'm saying something's wiseOriginally Posted by Rochester
Love your lighting mods... despite the annoying Yoda-speak.

Senior Member
Quote:

Haven't tried anything yet. Still gathering info and ideas.
According to my remote starter/alarm install sheets, the courtesy lights (door trigger), the wire should be red w/white trace, or a light blue going into the SECU.Originally Posted by Rochester
Page EL-97 in the 2003 FSM. This is the SECU with the wiring harnesses disconnected. For the courtesy lights, I need to tap into #32 for positive, and #43 for ground. (Thanks to knight_yyz.)
Haven't tried anything yet. Still gathering info and ideas.
Senior Member
Quote:
Yep, according to knight_yyz, it's the red wire w/white stripe. That's the one.Originally Posted by VQP0WER
According to my remote starter/alarm install sheets, the courtesy lights (door trigger), the wire should be red w/white trace, or a light blue going into the SECU.
I've got all my info. Now it's time to hook up some lights are see what's what. I'm not exactly rushing into this thing, but I'll remember to follow up with wiring confirmation when I get into it.
Rochester, the wires on the lights themselves are a good 18 inches at least, I used some 18 gauge stranded wire as well and spliced/soldered everything. Definitely post pictures and details of your courtesy lights adventure, as I am very interested.
Pictures came out pretty good...


Pictures came out pretty good...


Senior Member
Quote:
) how are the pictures?
It's a really difficult task to take a picture intending to show how something is illuminated. In these pictures the color is much better represented, even though they're still primarily black images.Originally Posted by dan.worts
(bump
) how are the pictures?
I'm going for white, myself, so it should look different than this. Just a dim, white LED light. I'll do what I can to photograph the results when I get to the mod. I haven't purchased lights yet, and just yesterday ordered a set of Posi-Tap connectors for the project:
http://www.posi-lock.com/posiplug.html
My plan is to first get the appropriate power/ground wiring established. After which, I can play with various lights and positions.
Let me know how it goes, as I will most likely also do it. As long as the hot wire itself is not too difficult to access.
Senior Member
Quote:

Haven't tried anything yet. Still gathering info and ideas.
Originally Posted by Rochester
Page EL-97 in the 2003 FSM. This is the SECU with the wiring harnesses disconnected. For the courtesy lights, I need to tap into #32 for positive, and #43 for ground. (Thanks to knight_yyz.)
Haven't tried anything yet. Still gathering info and ideas.
Quote:
I tried wiring into this harness today, #32-pos and #43-neg, using tap-in squeeze taps. And nothing. Zero power, and I don't know why. The LED strips I purchased work, I verified that.Originally Posted by dan.worts
Let me know how it goes, as I will most likely also do it. As long as the hot wire itself is not too difficult to access.
I don't think the #32 wire red w/white strips is the correct place to tap, because I got nothing.
Kind of frustrated right about now.
Hmmm, damn SECU makes things complicated. The battery Saver output for all the interior lamps is #50 which is red green. try that one, as it looks like power comes out of 50 goes to the step lamps and the circuit continues through to #32. Looks like I read it backward.
Senior Member
Quote:
Thanks, and I will try that out soon.Originally Posted by knight_yyz
Hmmm, damn SECU makes things complicated. The battery Saver output for all the interior lamps is #50 which is red green. try that one, as it looks like power comes out of 50 goes to the step lamps and the circuit continues through to #32. Looks like I read it backward.
I'm not running out to the garage just now to continue experimenting, however. Wedging my upper torso underneath the drivers dashboard, upside down, is a damn uncomfortable feat for these old bones.
Anyway, when I get this going again, here are the LED's I got through ebay for like $3/pair. Each strip has an adhesive backing, and should work out well enough hidden in the foot-wells. We'll see.

Senior Member
Quote:
I tackled this again today, and unfortunately that's Strike Two, Ray. Originally Posted by knight_yyz
Hmmm, damn SECU makes things complicated. The battery Saver output for all the interior lamps is #50 which is red green. try that one, as it looks like power comes out of 50 goes to the step lamps and the circuit continues through to #32. Looks like I read it backward.

When connected to the red w/green striped #50 wire on the 2-row harness, the power is constant, regardless of whether or not the door is open. In other words, this is a fine wire for direct, always-on power. But like you, I'm going for lighting in sync with the courtesy (door) lights.
Any other suggestions? There are 64 wires down there...
#30 is the keyhole illumination and 32 are the step lamps for sure.
The driver's door switch ground is #1. So when the door is open #1 has ground , when the door is closed there is no ground. That might work for you.
Now if you want them to fade like the keyhole does, then positive is 30 and ground is number one, or if you want them off immediately after closing the door 32 is the power.
The driver's door switch ground is #1. So when the door is open #1 has ground , when the door is closed there is no ground. That might work for you.
Now if you want them to fade like the keyhole does, then positive is 30 and ground is number one, or if you want them off immediately after closing the door 32 is the power.
Senior Member
Quote:
The driver's door switch ground is #1. So when the door is open #1 has ground , when the door is closed there is no ground. That might work for you.
Now if you want them to fade like the keyhole does, then positive is 30 and ground is number one, or if you want them off immediately after closing the door 32 is the power.
TMI, Ray. Just tell me what wires to try next, in P(ower) and G(ground) pairings.Originally Posted by knight_yyz
#30 is the keyhole illumination and 32 are the step lamps for sure. The driver's door switch ground is #1. So when the door is open #1 has ground , when the door is closed there is no ground. That might work for you.
Now if you want them to fade like the keyhole does, then positive is 30 and ground is number one, or if you want them off immediately after closing the door 32 is the power.
So far, we've tried:
P32, G43 - nothing
P50, G43 - always on
Senior Member
I have the LED strip under the footwell and inside the A/C vein. I just wire it to the wire of the mood light under the radio. So it turns on when I use my lowbeam.
Quote:
Too little too late, haha. We are working on courtesy lighting now, and Rochester has been nice enough to be the guinea pig of sorts for us Originally Posted by The6spdMax
I have the LED strip under the footwell and inside the A/C vein. I just wire it to the wire of the mood light under the radio. So it turns on when I use my lowbeam.

Senior Member
Quote:
Oink Oink! Originally Posted by dan.worts
Too little too late, haha. We are working on courtesy lighting now, and Rochester has been nice enough to be the guinea pig of sorts for us

Waiting on recommendations from knight_yyz for the next move.
Try 30 or 32 for positive. And 1 for the ground
Personally I think P30 G1 would look best because they would fade slowly instead of turning right off when the door closes.
Personally I think P30 G1 would look best because they would fade slowly instead of turning right off when the door closes.
Senior Member
Quote:
I need some clarification, please.Originally Posted by Rochester
Page EL-97 in the 2003 FSM. This is the SECU with the wiring harnesses disconnected.
Had this moment when I went to tackle this again today. I've been looking at each of the 3 wire-bundle connectors to establish which wire is which. But then I got all turned around wondering if these wires are identified by looking at the side with all the wires, or the side with all the holes...
...and I got all stupid confused.
So I went back to this post for clarification. Please confirm (anyone) that the diagram represents looking directly at the large plastic harness. From that, you can draw a mental line to the bundle connector matching hole. And from that, the wire on the other wide.
you are looking at the secu itself, not the harnesses, So to splice in you would look at the "wire side" of the actual harness.
Newbie - Just Registered
I'm going to be doing this mod to my 2001 I30, but I'm curious about the wiring. Is there any way to make sure that the wire I'm about to splice in to will do the trick without actually slicing into it?
Also, is the dome light part of this circuit? I mean, if I have the dome light turned off will the new lights still power on? That would be ideal, I think. Have the LEDs and the courtesy lights come on, and then the LEDs fade out when the doors close, but still have the dome light connected in case it's needed.
Also, is the dome light part of this circuit? I mean, if I have the dome light turned off will the new lights still power on? That would be ideal, I think. Have the LEDs and the courtesy lights come on, and then the LEDs fade out when the doors close, but still have the dome light connected in case it's needed.
Senior Member
Another solution if no one has considered this, is wiring your parking lights to come on anytime a door in opened. For those with aftermarket alarms its very simple since the needed wires are already there. Power, door trigger and parking lamp wires are all thats needed.
Using a relay its simple. Since my parking lights and lights beneath the dash are connected they come on whenever the door is opened.
Using a relay its simple. Since my parking lights and lights beneath the dash are connected they come on whenever the door is opened.
Newbie - Just Registered
Quote:
Using a relay its simple. Since my parking lights and lights beneath the dash are connected they come on whenever the door is opened.
That's a good idea, but we're trying to figure out how to wire the under dash lighting to the dome light circuit so the lights fade out when the doors are closed, and come on when the doors are opened. Originally Posted by luvlexus101
Another solution if no one has considered this, is wiring your parking lights to come on anytime a door in opened. For those with aftermarket alarms its very simple since the needed wires are already there. Power, door trigger and parking lamp wires are all thats needed. Using a relay its simple. Since my parking lights and lights beneath the dash are connected they come on whenever the door is opened.

I wish I could find a good guide to the car's wiring somewhere. One central resource that said "the red wire with the thin green strip that is connected here is the wire for blank". All I can find are schematics and wiring diagrams that tell me what a particular devices is connected to, just not the details.

Senior Member
Well the dome lights run in the a pillar....
http://forums.maxima.org/5th-generat...s-diy-how.html
done
http://forums.maxima.org/5th-generat...s-diy-how.html
done
Newbie - Just Registered
Ok, looking at page 127 of the EL section of the 2001 Infiniti I30 service manual, it looks like the connection would be 50+ and 31 ground.

(Click for larger view)
This is based on what the manual says a few pages beforehand:
When a signal, or combination of signals is received by the smart entrance control unit, ground is supplied:
- through smart entrance control unit terminal 31
- to interior lamp terminal 2.
With power and ground supplied, the interior lamp illuminates.
Plus, because I popped off the dome light cover and saw the color of one of the cables was Red/Green, so I think I'm half right.
Unless I'm not reading the diagrams right....which is a good possibility.

(Click for larger view)
This is based on what the manual says a few pages beforehand:
When a signal, or combination of signals is received by the smart entrance control unit, ground is supplied:
- through smart entrance control unit terminal 31
- to interior lamp terminal 2.
With power and ground supplied, the interior lamp illuminates.
Plus, because I popped off the dome light cover and saw the color of one of the cables was Red/Green, so I think I'm half right.
Unless I'm not reading the diagrams right....which is a good possibility.