2008 infiniti g35 remote start

Hi all, I've just successfully attempted my first remote start install, and in the course of doing so ran across this awesome forum. I have one tiny problem that I'm hoping I can get some help with.

The problem is the valet mode on my Viper 4205 remote start is not working. It's like the Viper is just not receiving power when the ignition is on. I needed to re-pair my remote during the install, and I got around it by directly wiring 12v power to the Viper which allowed valet mode to work. I thought all was good, but now in hindsight I've realized I can never get back in to valet mode without taking the car back apart. I'd like to go ahead and resolve it while the install is still fresh in my mind. Hope all that makes sense! Here are my install specifics:

2008 Infiniti G35x with push to start
DBAll2 with optional wiring harness in D2D mode
Viper 4205 remote start

I wired everything according to the installation type 2 instructions, with a few exceptions. I made those exceptions because I was following a DBALL2 DIY guide from another website. So here's what I've got hooked up:

DBALL2:
   -wiring harness to the smartkey port and to the ODBII connector
   -unlock output (BLACK/ white) to BCM pin 15 (this is one of the exceptions)
   -push to start (GREEN/ black) to brown wire in push to start button
   -lock output (GREEN / WHITE) to BCM pin 37 (another exception)
   -door trigger (RED / black) spliced to BCM pin 39 wire
   -Ignition status input-output (violet/green + violet/brown) to Viper pink heavy gauge relay #6 (this is where I temporarily applied 12v power to program the remote)

Then I installed the Viper:
   -Two wires to factory ground: H1/8 (black) and H3/1 (BLACK/ white)
   -Two wires for 12v power: heavy gauge relay #1 and #3, both red, both tied in to the same 12v white power cable in the BCM
   -Heavy gauge relay #5 (purple) to brake wire (white)
   -As stated above, heavy gauge relay #6 (pink) to the two DBAll violet wires
   -Hooked up antenna and valet switch

I think that covers it. Again, the car starts and behaves fine, I just don't think I can access valet mode. I never hooked up the horn, so not expecting chirps, but was led to believe the parking lights should flash in valet mode. I checked, no flash.

Thanks for any thoughts or pointers!

Should have mentioned, I'm attempting to enter valet mode by turning ignition to ON, then OFF, click valet button one time, then click and hold for a few seconds, but nothing happens (at least on the outside, perhaps the light is blinking on the module but the car is fully assembled so I can't see it)

I'm guessing that the DBALL isn't supplying ignition signal to the Viper's pink wire.

It's actually really nice that the DBALL tries to give you ignition on/off status. The other bypass guys don't do this, and I think they should.

Anyway....so I guess you could try to troubleshoot the module, maybe play with the firmware, maybe call their tech support. Might help, might not.

What I would do is just cut the Viper pink away from the DBALL, and connect it with an inline diode to the green ignition wire available at the OBDII port in the car. The band on the diode should be facing the Viper; the all-black part of the diode facing the car.

Thanks Chris. I definitely can't go down the firmware route, I'm not the one that flashed it. Do you know the amp/volt specs on the diode I should use?

Tapping the ODBII port would be great because it is the easiest accessible area for me. I can't find any documentation on that port, all I see are diagrams for the BCM. Is there a wiring diagram available, or can I just test the green wire for 12 volts with ACC on?

Thanks for your help!

Diodes are 1N4004, check that green wire with IGN on, NOT ACC.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Thanks Howie! Typo there, meant to say test with IGN-ON like you say. Will pick up a diode tonight and give it a shot.

Use two diodes in a "Y" formation.

-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Oh no Howie! I was doing so good understanding everything until that last "Y" comment. Why is the "Y" needed? I see where that's necessary for multi-wire cases, but in this case it's one Viper wire to one ODBII wire, so how would two diodes work?

Thanks!

I might have lost the plot but here are my thoughts.
If that wire is serving two functions then two diodes required for correct separation avoiding feedback.

-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Thanks Howie. The plan was to hook the Viper heavy gauge relay pink wire (output to primary ignition circuit) to the green ODBII wire in order to provide 12v power when ignition is ON, because for whatever reason my DBAll2 is not providing power.

Forget the diodes then.

-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.