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2003 Mazda MPV 1 Wire Door Lock Dilemma


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diariocruz 
Member - Posts: 4
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Joined: March 30, 2019
Location: Washington, United States
Posted: March 30, 2019 at 4:51 PM / IP Logged Link to Post Post Reply Quote diariocruz
I can’t wrap my brain around how to wire up my door locks from the alarm to the car. Car did not come stock with keyless entry for some odd reason but I’ve learned it time on a negative 1 wire system and I have all the relays/resistors to complete the install but I can’t comprehend how to wire them up. Can someone please provide a wiring diagram?
i am an idiot 
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Posted: March 30, 2019 at 8:57 PM / IP Logged Link to Post Post Reply Quote i am an idiot
What resistor value locks and unlocks?
i am an idiot 
Platinum - Posts: 13,667
Platinum spaceThis member consistently provides reliable informationspace
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Posted: March 30, 2019 at 9:01 PM / IP Logged Link to Post Post Reply Quote i am an idiot
Constant power to 86 of both relays. Lock wire from alarm to 85 of one relay. Unlock wire from alarm to 85 of the other relay. Ground terminal 30 of both relays. Attach unlock resistor to 87 of the relay you put the alarm's unlock wire. Attach lock resistor to 87 of the relay you connected the alarm's lock wire. Other end of both resistors to the one wire.
If it calls for a resistor on one and direct ground to do the other just skip the resistor and connect 87 of that relay directly to the one wire. Connect the resistor to the same spot as that wire.
iskidoo 
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Posted: March 31, 2019 at 1:15 PM / IP Logged Link to Post Post Reply Quote iskidoo
2003 Mazda MPV 1 Wire Door Lock Dilemma -- posted image.
Steve G
diariocruz 
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Joined: March 30, 2019
Location: Washington, United States
Posted: March 31, 2019 at 6:04 PM / IP Logged Link to Post Post Reply Quote diariocruz
1k resistor abs thanks for the explanation I’m wiring it up now. I’ll post update when complete
diariocruz 
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Member spacespace
Joined: March 30, 2019
Location: Washington, United States
Posted: March 31, 2019 at 6:06 PM / IP Logged Link to Post Post Reply Quote diariocruz
Thanks for the image! Helps a ton. Pretty sure I understand now. Putting it to practice and will post up when done.
diariocruz 
Member - Posts: 4
Member spacespace
Joined: March 30, 2019
Location: Washington, United States
Posted: March 31, 2019 at 7:28 PM / IP Logged Link to Post Post Reply Quote diariocruz
Thanks again, I got it to unlock but I’m still not getting it to lock. I actually think the alarm isn’t setting at all so maybe it’s something else causing my problem. Think I’m gonna throw in the towel and take it to a shop.

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