This wiring information is being provided free of charge and on an "as is" basis, without any representationIt is your responsibility to verify any circuit before interfacing with it by using a digitalGNU Industries, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. GNU assumes no responsibility resulting from an improper installation, even in reliance © 2000-2008 GNU Industries, Inc. Three Steps to Determine Door Lock Type To determine what type of door lock switch you are working with, follow these three steps: 1. Locate the harness plugged directly into the back of the door lock switch. If there are no external door lock switches, you will most likely have a vacuum type system or an *aftermarket door lock system with relays, or have an added actuator 2. Next, with your multi meter, probe each of the wires in this harness and write down

the readings during lock, unlock, and at rest positions of the switch. measure for continuity to ground as well as positive DC voltage and pay close attention to any changes in voltage, resistance, and the duration of pulses. If the switch is illuminated when the lights are turned on, find this wire(s) first and ignore it. 3. Now compare your readings to those listed below. Car Security and Convenience: Car Alarm Sensors / Triggers Light Flash / Illuminated Entry Relays and Relay Diagrams: SPDT and SPST Relays Illuminated Entry & Light Flash Relay Diagrams - Quick Reference Monday, February 06, 2017 • Top of PagePages in this section 3-wire door locks can be either positive (diagram below), or negative. There is either a constant ground or positive wire that makes contact with either the lock or unlock wire when the switch is pushed. The idea here is to add relays that will make the alarm’s lock and unlock outputs to do the same thing the switch does.

3-wire door locks are used by a lot of Japanese cars. There is no need to cut the factory wires, just strip the insulation a bit and add the alarm wires (make sure you have a good connection – solder if possible). 5-wire door locks are a bit more complicated. While the switch is off, both wires (lock and unlock) are grounded. lambo door kit for dodge neonWhen the switch is pushed for example to the unlock position, the unlock wire gets disconnected from the ground, and connected to +12v, activating the actuator. garage door spring loosenSame applies to the lock wire, but this time the voltage is reversed, moving the door lock actuators in the opposite direction. internal upvc french doors

Here you have to cut the factory relays and hook up the aftermarket relays as shown. On the diagram, the “to switch” end of the wire is grounded and the “to solenoid” end of the wire either locks or unlocks the doors if given +12v. Converting Manual to Power Locks On some cars such as older Isuzu Rodeos a solenoid has to be added in order to make the other doors lock and unlock. door hanger template aiThe driver’s door lock does not have an actuator, it acts as a switch, so that when the lock goes up and down, it controls the power locks in the other doors.garage door repair sterling heights Actuators can be added to virtually any car that has no power locks. baldwin door hardware warranty

One actuator is needed per lock. The circuit below will control all the actuators, locking and unlocking all doors at the same time. A grounded switch can also be added where the alarm hooks up to lock/unlock the doors manually. Note that the diagram is for alarms that have negative (ground) pulses for lock and unlock. interior slab door home depotIf the alarm you are installing has positive outputs, then simply hook up the “85” terminals of the relays to ground (-). Please keep in mind that the diagrams apply to most GM, Chrysler’s and Fords, but not ALL, so all wires should be checked before any connections are made. There are other ways in which factory locks are wired up that don’t fall in either the 3 or 5-wire categories, such as Ford Probes which use different voltage levels, Toyota Camrys with child safety locks which use diodes, and Mercedes, and other German cars that use vacuum door locks.

Once you have determined which type of door lock switch you are working with, adding keyless entry and other locking features is very simple. 3 Wire Positive Door Locks 4 Wire Reversal Door Locks 5 Wire Alternating 12V+ Door Locks Actuators / Reverse Polarity Vacuum Type Door Locks Auto Lock w/o an Alarm/Keyless Entry Auto Unlock w/o an Alarm/Keyless Entry This is one of the most common type of door lock switch configurations found in most vehicles. In most cases you will not need to add relays forMost of the newer alarms and keyless entries on the market today have both positive and negative (200 ma) door lock outputs that are usually capable of activating the factory relays. Should you need to add relays for a "3 wire negative" door lock system, just change both normally open terminals (87) from 12V(+) to ground. If your alarm or keyless entry has positive outputs only, you will have to connect the other side of the coils

to ground  and connect your outputs as shown. The lock and unlock wires below refer to the switch wires, not the motor legs. In this case, both motor legs of the door locks are normallyThey neither rest at ground or 12v(+). The switch, when moved in either direction, applies both power and ground directly to them without the use of any relays. 5 Wire Alternating 12 Volts Positive Door Locks Like the 4 wire configuration, the switch, when moved in either direction, applies both power and ground directly to motor legs  without the use of any relays. Except, at the switch in this case, both motor legs rest at ground . Therefore it is only necessary to change the polarity of one motor leg to lock or unlock the vehicle. This is practically identical to the 5 wire alternating 12V(+)The only difference is there's no switch! Both motor legs rest at ground at the relays. To lock or unlock the vehicle, polarity is changed on one motor leg.

Found mostly on Mercedes Benz vehicles, the movement of the door lock actuators is controlled by a central vacuum pump. changes polarity on a single wire that may rest at power or ground depending on the state of the door locks. You can duplicate this with at least aIf the alarm or keyless entry you are installing does not have a 2 second or longer duration option for the door lock outputs, do not use this diagram (it will not work unless you incorporate a timer into Add Auto Lock without an Alarm or Keyless Entry System You can easily add the convenience of auto lock to any vehicle equipped with power locks without adding a keyless entry or alarm ( or if the one you have does not have this feature). Please notice the relayThis is an inhibit to prevent the doors from locking the customer out of his vehicle. When the key is turned to the "ignition on" position, the doors will only lock automatically if the doors are closed. vehicle has a positive door trigger, change terminal #85 of the left relay