do i need a relay for 2nd door unlock?
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=123671
Printed Date: May 10, 2025 at 10:43 AM
Topic: do i need a relay for 2nd door unlock?
Posted By: the12voltuser
Subject: do i need a relay for 2nd door unlock?
Date Posted: September 25, 2010 at 11:07 PM
I'm installing a Python 991 on a 2006 Toyota Corolla. Do I need to use a relay for the 2nd unlock signal or will the 200mA (-) be okay?
Replies:
Posted By: howie ll
Date Posted: September 26, 2010 at 3:39 AM
Providing you are going to the car's negative trigger 200mA well be fine.
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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.
Posted By: anewman
Date Posted: September 26, 2010 at 3:42 PM
If it is a negative multiplex (resistors) on the unlock I would guess you need a relay in order to be able to give a predictable level of resistance with a resistor (at least I guess this is why Clifford recommend using relays on their systems with 2 wire central locking control.
Posted By: howie ll
Date Posted: September 26, 2010 at 5:03 PM
No it doesn't have multiplex locking. You've done a Polo with mux locking and very few cars have them. Your post isn't relevant.
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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.
Posted By: t&t tech
Date Posted: September 26, 2010 at 7:32 PM
X2 with howard, it's toyota.
Posted By: anewman
Date Posted: September 26, 2010 at 9:10 PM
Sorry hadn't meant my post to be misleading. Focused on the relay needed aspect in general, rather than the car (with which I only have experience of a handful as a newbie). 2 posters above are definitely the ones to take note of  
Posted By: t&t tech
Date Posted: September 26, 2010 at 9:31 PM
Yes we realize you are a new man, lol, .
Posted By: Mike M2
Date Posted: September 27, 2010 at 6:35 AM
Ok here's the way it really is. 2006 Corolla came two ways, with or without factory keyless entry. If it has it, the unlock pulse will unlock the drivers on the first pulse and the rest on the second(so no relay needed). If it doesn't have it, first pulse does nothing and the second pulse unlocks all doors. Use the wires from the key cylinder...
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Mike M2
Tech Manager
CS Dealer Services
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