2002 Trailblazer w/ Automate (DEI) 7HF

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=8828
Printed Date: June 26, 2025 at 7:06 PM

Topic: 2002 Trailblazer w/ Automate (DEI) 7HF

Posted By: shim895
Subject: 2002 Trailblazer w/ Automate (DEI) 7HF
Date Posted: January 30, 2003 at 12:56 PM

Hello, I am installing an Automate(DEI) 7HF RemoteStart/Alarm system on a 2002 Trailblazer. I have the PLDATA and GMDL1 modules. I have 3 questions:

1. I do not have a ground output when running wire on the 7HF to connect to the PLDATA and GMDL1. How would I go about doing this? I do have a Status wire (-200mA). Would this work? Or is there a better way to do this? Some specific info on how to hookup the PLDATA and GMDL1 together would be helpful too.

2. Do I need to connect both of the ignition and accy wires to the autostart for it to function correctly? I have 2 ignitions out, but 1 accy out on the 7HF.

3. Does anyone have an install guide for the Automate 7HF?

Replies:

Posted By: Chris Luongo
Date Posted: January 30, 2003 at 3:25 PM

1. Status is "ground while running."

2. Two main ignitions are pink and white; they'll make the engine run. Orange is accessory; it'll power the climate controls. You should have enough outputs on the DEI for this.

3. Never heard of a 7HF, but try www.directed.com for downloadable manuals.....If you don't see the 7HF, try the Viper 550 or Sidewinder 6500----the wiring should be similar.

Posted By: shim895
Date Posted: January 30, 2003 at 3:42 PM

Thanks for the info...

There is a brown accy wire too. This one doesn't need to be hooked up for any reason right? Didn't know if the hvac and fan were separated. on the 02 Trailblazer...