Electrical configuration (rear tail lamp) advise needed.

[Porcu5]

View attachment 166559 Hi, all

I need some electrical configuration/modification advise.

This is for Rear LED tail lamp project and try to use GT style lamp that I fond on online, I am thinking to build turn signal inside of this donuts shaped lamp, like R34 GTR inner lamp looking kind..


I am involved with project that I need to somehow convert US 2 way rear combination lamp configuration into JPN complying 3 way ( separate amber turn signal ) configuration. I also need to cancel sequential function as well..

Objective is

1. Cancel sequential turn signal function.
2. Need to isolate turn signal pules from brake function.
( I am making separate amber turn signal lamp)
3. I am hoping to achieve above 2 goal below rear body control module output(if possible)
= I prefer not to run to obtain front turn signal ,, best if I can achieve only at the down below rear body control module output.


Looking at wiring diagram, for RH side, I see 3 lamp per side is individually fed by
Outer STOP/TURN(GY-VT)
Middle STOP/TURN(BN)
Inner STOP/TURN(VT-OG)
lines from rear body control module.

And combined GND


I also see wire called

OUTAGE(GN) wire goes into tail lamp.

I am terribly sorry, dealer gave me this extremely low resolution diagram..



Does anyone know if this OUTAGE line is +V signal to shut off to make turn signal blinking while brake lamp is ON?


I have not been able to research about if rear lamp is monitored or controlled via CAN communication, but I do not see CAN communication wires in diagram,,so I am hoping it is simple voltage ON OFF communication.



About sequential function

Will it be OK to combine OUTER MIDDLE INNER lamp wire into 1 bundle?

If I can, now this rear tail lamp is simple 2 way COMBINATION lamp configuration.


from here, I thought I can combine with some 2 way to 3 way converter, but some of converter I found had issue of when BRAKE is applied, turn signal output is flipped ON and OFF from front turn blinking timing

I think converter is primary cross trigger and feed combined brake line,
Another relay to switch pole to detect when brake is applied
Another relay powered by combination signal ON=not continue, OFF=continue to make isolated blinking possible.

But problem I found is that, when brake applied and also turn signal is used, front turn signal timing and rear signal timing is flipped = alternate.



Is there way to somehow utilize,,, at least blinking signal I obtained into proper blinking timing?

I am aware of if i run wire to extract front turn signal timing, or solid signal that indicate when turn signal use, I can make front and rear matching signaling..

But really hoping I can achieve this just by below rear body control module.



If anyone familiar with electrical configuration, or know product that make this achieved, please kindly advise me.



Thank you.

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