2006 chevrolet trailblazer / python 5206p

Was wondering if someone would be kind enough to help clear up this wiring description. I'm not a mobile installer by profession however I have installed them before. The last one I installed was a Python 791xp in my silverado, which was s couple years ago.
I now have a 2006 Trailblazer and I want to install this Python 5206P, I'm pretty good with everything else but the Remote start side of this system is pretty confusing now. Would someone be nice enough to clear it up for me. I see that there is an option to hook up the 2nd ignition but I'm wondering if the H3/8 can be hooked up to the 2nd accessory wire. Or am I going to have to use a relay and hook up to the Auxiliary/ trigger harness and use the 19 Pin Violet/Black Aux 2 output.

Side note...I have the DB-GMDL-BP bypass, which is similar to the one I installed in my Silverado so I'm kosher there.

Another thing, Whats up with the crappy install guides now, use to be a nice book, now its a one page Fluster Cuck.


I apologize if this has been covered.

Looking at this I meant to say Pin 23 on the Auxiliary/ Trigger harness...says it is the 200mA Accessory Output......
And one more question What is Pin 5 (Status output) and Pin 11 (activation input) mean?

First, there is a Pictorial on your truck. It should help with the wire locations, etc.
https://www.the12volt.com/installbay/forum_posts.asp~TID~130514~PN~1

The Python can supply the Trailblazer's IGN1, IGN2, Starter and ACC1 wires, as follows :
H3/1 PINK (+) IGNITION 1 INPUT/OUTPUTPink
H3/2 RED / WHITE (87) FLEX RELAY +12V INPUT  Red
H3/3 ORANGE (+) ACCESSORY OUTPUT     Orange
H3/4 VIOLET (+) STARTER OUTPUT (CAR SIDE)  Yellow
H3/5 GREEN (+) STARTER INPUT (KEY SIDE) Yellow
H3/6 RED IGNITION 1 +12V INPUT (30A FUSED) Red
H3/7 PINK/WHITE (30) FLEX RELAY OUTPUT  White   ** Default setting
H3/8 PINK/BLACK (87a) FLEX RELAY INPUTnot used
H3/9 RED / BLACK ACC/STARTER RELAY +12V INPUT RED / White
H3/10 NC No Connection

If you wish / need to power the Brown ACC2 wire, use a 30/40 Amp SPDT relay controlled
by the Pythons (-)200mA Accessory Output wire. I believe the exact relay wiring is also
detailed somewhere in the Pictorial ( halfway down Page 2 ).

(-) Status Output is also known as Ground When Running. Would be used for the GMDL-BP
bypass module.

Activation Input is used as a way to initiate a remote start ( instead of the remote FOB Start
button ).

As for the very brief install guides, that is Directed's way of making thing difficult for DIY'ers.



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Soldering is fun!

Thank you for your help...would you be able to assist me with one more thing. I'm second guessing myself with the bypass...

The pink wire should that go to the vehicle or to the H2/4 Dome light output and if I hook it up to the car do I use a relay. If the pink wire goes to the vehicle then do I just tie them together?


and the pink/ white wire should hook up to the H2/15 (-) door input on the alarm.

Thank you for the help. I am just waiting on the ball bearing til switch, replacing the hood popper that comes with the alarm because I have never liked them and they rust to easily. When that comes in I will install this.

May not be able to help too much with the GMDL-BP module - never used one. If your Trailblazer has the Factory Alarm and / or heated seats, there are other bypass
modules that will do more for you. I use the Fortin INT-SL+ because it also handles the Parking Lights and supplies a Tsch signal.

Here is my understanding from the the GMDL-BP install guide.

1. The GMDL-BP Pink/White wire will only provide the Python H2/15 with front door triggers, not the rear doors.   

2. The GMDL-BP's Brown wire goes to the Pythons Dark Blue (-) Status Output wire.

3. You can connect the GMDL-BP's Red wire to any of the Pythons power wires ( Red, Red, RED / White, RED / Black ), and the Black wire to the Pythons Black chassis ground wire.

4. The Pythons Dome Light Supervision output wire is (-) signal and can't be directly connected to the Trailblazers Dome Supervision gray/black (+) wire listed in the wire guides.
    A relay would be required to convert the signal to (+). Do the Trailblazers interior lights come on with a Factory FOB Unlock command? If yes, you might not need / want to
    connect this wire. See if the Python's unlock command does the same thing.

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Soldering is fun!

Thank you for your help. I am looking into the other bypass kit you mentioned . The alarm I have says it has virtual tach so not sure I will hook up the tah wire. Hookng up the parking light is not really a big issue.

Just a question about the door trigger...is there another way to capture all of the doors? I know in the past I have heard it mentioned to tap into the dome light.

As far as the dome lights coming on with the unlock command, I believe they do. I currently have the button pushed in to elimnate that.

You can try the Pythons Virtual Tach but most installers prefer the
reliability of running in Tach Mode.

Yes, often times connecting the Python door trigger input to the Dome Light wire works well. The big problem with that is the dome light delay / fade and it's affect on setting the Pythons alarm. The best way to monitor each / all doors is connecting to each doors pin switch. The Trailblazer is a PITA because you have to run a wire into each door.

Connecting to the Parking Lights gives a good visual feedback when locking, unlocking and remote starting the truck.



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Soldering is fun!

sorry about that, the mention of the parking light came out wrong, when I said it was no big deal I meant it was no big deal to run a wire to the actual parking light wire. Since you mentioned the other bypass does this for you, whereas mine does not.

my trailblazer dome light comes on with the push of the unlock.

would you happen to know the wire colors for each door as well as the rear defrost wire so that I can hook that up?

Am I going to have to grab the tailgate wire also? If the front 2 doors are already sensed shouldn't I just have to get the rear doors only

Yes, the GMDL-BP supplies the two front door triggers. You will add to that Python wire the
other three doors. Add a 1N4001 diode to each of these wires, with the band towards the door.

Trunk/Hatch Pin pink/black (-)   @ liftgate module in liftgate
LR Latch LIGHT BLUE/BLACK (-)       INSIDE LEFT REAR DOOR AT MODULE   
RR Latch LIGHT GREEN/ BLACK (-)    INSIDE RIGHT REAR DOOR AT MODULE


Rear Defrost VIOLET (+) AT LIFT GATE CONTORL MODULE IN REAR HATCH ***
*** THE REAR WINDOW DEFROST ON THIS VEHICLE IS SENT THROUGH CLASS 2 DATA FROM
       THE A/C TO THE LIFT GATE CONTROL MODULE

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Soldering is fun!

thank you again.....so since you mentioned the defrost was on the databus...I broke down and purchased the Fortin INT-SL+....

can you give me any advice on this module...the wiring is pretty straight forward..Is this going to detect all the doors, well I be able to control the hatch open and is there a way to get the driver 1 and 2 settings to work on the python alarm I have....

Thank you.

If I have to the Python has a 2nd trigger wire to attach to tailgate....the other question I have is which ignition wire am I suppose to hook the INT-SL+ wire to? And what is the deal with only a Lock wire and not an Unlock...just unlock driver 1 and 2

The Fortin INT-SL+ is a nice module. It comes pre-loaded and all ready to go right out of the box. The DLPKGM is the same module but has DBI D2D support. You will need to
wire it up in the W2W mode between the Python and the INT-SL+.

If your Trailblazer has the Memory Seat option, you can have it set the seat position during a Unlock command by connecting the Pythons Unlock wire to either Unlock Driver1
or Unlock Driver2 wire at the INT-SL+ module. If you want to get fancy, you can do the other Unlock wire with an AUX to be able to go to the other memory seat position with
an unlock.

The INT-SL+ Pink Ignition wire can connect to the Pythons tick Pink Ignition1 output wire from the H3 harness. This thick Pink Python wire will continue to the Trailblazers Pink
Ignition1 wire at the ignition switch harness.

Not sure about the INT-SL+ Door Trigger output supplying info on all 4 doors. They don't mention it in the install guide but other full function bypass modules can only get the
front doors. You will have to test. If necessary, you have the rear door trigger info to wire them in ( with 1N4001 diodes ).

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Soldering is fun!

Sounds great, wonder if I call their support would know if it covers the rest of the triggers. I just real want to avoid having to run extra wires to hook up the other triggers, I will if I have to but I was happy with the modules shortening install times. Somewhere I read that the previous module I was going to use would pick up the front and hatch, just not rear, so hoping this will get all.
I forgot to ask, is this module, if I hook up the hatch wire to the alarm going to actually open it with the alarm remote because I have no hatch button on the factory remote.... And just out of curiosity, hooking up the driver 2, going to need relay I would guess also?

Yes, a call to Fortin should answer that question on the rear door triggers.

Does the Trailblazer have an internal hatch release button somewhere in the truck? If yes, then it should
allow Python remote control.

The Python's AUX outputs are (-) so you could directly connect AUX1 to the INT-SL+ Unlock Driver2
wire and the Python's Unlock wire to the INT-SL+ Unlock Driver1 wire. No relay needed. Default Python
programming should be OK.

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Soldering is fun!

Nope no internal hatch release button.

Will I need to use the ground when armed output in order for the start kill to work, or I can leave it alone sine the relay is internal to the alarm..

You know how I can add another LED, not liking the led in the antenna, I installed an Autostart system in my old Mazda MPV and it had that also. Could never really see the led flashing because of angle of glass. I have a spare blue led that you used to use in alarms and would like to add that at dash level. Do you happen to know which are the led wires in the antenna/ led/ control button.

The Starter Kill relay is internal. Cut the Trailblazers Yellow Starter wire and connect the H3/4 and
H3/5 wires accordingly. See Menu 3, Item 13 for Anti-Grind.

You can use the Pythons Ground When Armed output wire to run your extra LED.   Most LED's will
only draw ~20mA, so the Vipers (-)500mA output will do fine.

If the rear hatch release is mechanical ( versus electronic ) then the INT-SL+ hatch release might not
work. Another question for Fortin T/S... My notes just say the rear hatch is locked and unlocked with
the doors.

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Soldering is fun!

last question until I get a hold of Fortin in the morning. The second led had a blue nd red wire. The negative will hook to the ground when armed wire, the other will have to go to 12v source right? You know which one is + or -?

the rear hatch does unlock with the doors, then have to lift the handle out side, it doesn't pop open..

I'll let you know everything I hear back from them so you can have the info for the future.

Typically the Red wire will be (+) but you should test to be sure.
Briefly touch the LEDs lead to a 9V transistor battery or even the posts on the trucks battery. If it doesn't light up, reverse the leads and try again.

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Soldering is fun!

I thnk that the LED that I got has the build in resistor, because i know that if I were to hook it straight up to the 12v....it would blow correct?

Most LED's have a working (forward) voltage of 2.8 to 3.6 V DC so they add a resistor to get them to operate properly in a 12V vehicle.
Here is a link to a program that will calculate the correct resistor value given the LED's values.
https://www.hebeiltd.com.cn/?p=zz.led.resistor.calculator



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Soldering is fun!

Alright, Spoke with Fortin. Their customer service is something to be desired. I told them what I had and the type of alarm I was going to be installing. I went on to tell him that most modules only monitor the front doors and I was wondering if this module monitored all 4 doors and even the Tailgate. He went onto tell me that the guide tells you everything that you need to know, I then repeated myself, that other modules claim to monitor the doors but never say just the front.
He said that it will monitor the 4 doors but not the trunk. So I will have to run a wire from the trunk in order for it to be monitored.

As for the trunk unlock, he said, the guide says it will...so it will, then went on to ramble all the features that the guide says the module will do. Even though I already knew that and was just calling for clarification.


So, I will hook up the trunk unlock wire to the alarm and see it if works. I'll run a single wire from the trunk to the trunk instant trigger on the alarm and then everything else should be good from there.
I'll follow up in the next couple days, maybe send you a PM so that I can stop bothering people with this. but for the most part, my questions have been answered and there wouldn't have been so many if DEI hadn't changed there wording and destroyed their guides.