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Discussion Starter · #1 ·
I have a problem installing keyless entry in may Nissan Altima 99.
I know that the lock and unlock wires are grey and vieolet but when I try to measure the voltage on them it is some very low voltage it is not 12 volts. Does any body knows about door lock/unlock circuit in Altima 99 (wire colors and voltages it operates with, location in the car).
I will welcome any information.
Thank you!
 

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The wires are usually located in the factory alarm harness. It is located on the right side of the steering column coming out of a silver module which is the alarm.

You probably won't measure voltage because the locks are a negative trigger. When you hit the lock or unlock switch the wires should go to ground.

If you strip back the wires and touch them to a ground the doors should lock or unlock.
 
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