1994 80 Series Landcruiser Keyless Wiring

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=145960
Printed Date: May 10, 2025 at 7:20 AM

Topic: 1994 80 Series Landcruiser Keyless Wiring

Posted By: secur60
Subject: 1994 80 Series Landcruiser Keyless Wiring
Date Posted: January 22, 2020 at 3:00 AM

hi guys
well i went to install an aftermarket keyless entry and alarm system on my old truck
i spent apmost 5 hours trying to figure out how to install it but i couldn't

because the car has a negative door lock / unlock system and the kit i bought has a + and - wires to the lock unlock kit brain

i tried to connect it to the armrest lock/unlock but it didn't work out

any one done that before or any help how wire it

thanks

Replies:

Posted By: kreg357
Date Posted: January 22, 2020 at 6:22 AM

Here is some info on the U.S. version Landcruiser of 1991 through 1997 from Bulldog Security :
POWER LOCK BLUE/BLACK (TYPE B) IN DRIVERS DOOR HARNESS
POWER UNLOCK BLUE/YELLOW and BLUE/ORANGE (TYPE B) IN DRIVERS DOOR HARNESS

Don't have any info on your RKE system but you should set it for (-) Door Lock and Unlock outputs.
A direct connection to the Lock wire is all you need. For the Unlock you will need two 1N4001 diodes
and follow this diagram :
https://diagrams.marktoonen.nl/DOWNLOADS/26500_LAND-CRUISER_TOYOTA%20UNLOCK%20DIAGRAM.pdf

To locate and test the above mentioned lock wires use a Digital Multi Meter set to 20V DC. Connect the Red test lead
to +12V constant and the Black test lead to the suspect wire. Press the drivers door lock/inlock buttons to see the DMM
go to +12V.

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Soldering is fun!

Posted By: secur60
Date Posted: January 22, 2020 at 6:56 AM

thanks mate for your reply really appreciated

i forgot to write some info about the car and the system

its RHD Australian model without factory alarm or key less system

i searched online a lot almost all what i found was for U.S cars

all the wires were different color/location etc

i located the lock/unlock wires as you said using the multi meter when i tried to connect them nothing happened but i didn't used any diodes it was a little bit confusing because some people worked out for them with direct connection to lock/unlock wires some got lucky with the wires before the central door control unit , but i had no luck anyway

last try was to connect the wires to the main lock/unlock switch i hacked the rear cover the button has 3 wires 3.2.1 if i want to lock it 1 and 2 will contact so the car locks to unlock it 2 and 3 will connect to each other so it opens , there were my problem what to do about the 3rd wire or how to connect it , some people worked out for them with direct connection to lock/unlock wires some got lucky with the wires before the central door control unit , but i had no luck anyway

posted_image

Posted By: kreg357
Date Posted: January 22, 2020 at 9:01 AM

It might be easier to use relays controlled by the aftermarket RKE system to duplicate what the central locking switch does.
You would need two 30/40 Amp SPDT relays and the 5 wire harness.

Lock Relay :
Relay Pin 85 to RKE (-) Lock output
Relay Pin 86 to +12V constant
Relay Pin 30 to central locking switch Pin 2
Relay Pin 87 to central locking switch Pin 1

Unlock Relay :
Relay Pin 85 to RKE (-) Unlock output
Relay Pin 86 to +12V constant
Relay Pin 30 to central locking switch Pin 2
Relay Pin 87 to central locking switch Pin 3

All that is left is to figure out which two wires from the RKE system supply a (-) output with the remotes lock/unlock commands.

-------------
Soldering is fun!