2000 s10 power alarm
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=108954
Printed Date: June 20, 2025 at 11:37 AM
Topic: 2000 s10 power alarm
Posted By: lilc0olkid007
Subject: 2000 s10 power alarm
Date Posted: November 16, 2008 at 12:33 AM
I got power doors off of a 97 blazer from the junk yard i hooked the locks up using 2 relays. I attached a picture of how i did it. I was wondering what i would need to do and what wires i would have to hook up to in order to install a key less entry. Thank You. 
Replies:
Posted By: lilc0olkid007
Date Posted: November 17, 2008 at 7:09 AM
Can anyone help me on this?
Posted By: ckeeler
Date Posted: November 17, 2008 at 11:06 AM
did you wire the switches to have a positive pulse output?
Posted By: chriswallace187
Date Posted: November 17, 2008 at 2:58 PM
Judging by your diagram you connected 85 from each relay to one switch and 86 to the other? This shouldn't work in theory to actuate the locks. Am I just misreading what you've illustrated?
I would suggest that you wire the door switched wires to terminals 85 on their respective relays - also you can connect the (-) lock/unlock outputs from a keyless entry unit to those same terminals. Terminals 86 would go to 12V constant. The switches would also get a ground input if you haven't done that already.
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C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
Posted By: lilc0olkid007
Date Posted: November 17, 2008 at 6:07 PM
Sorry I was in a rush last time. Here is a little better picture.
Posted By: ckeeler
Date Posted: November 17, 2008 at 6:14 PM
lilc0olkid007 wrote:
Sorry I was in a rush last time. Here is a little better picture.
thats kinda how i thought you had it, but i wanted to make sure. all you need to do is go to the relay section on this site and look at the setup for doing door locks for a 5 wire reverse polarity system. you will need 2 more relays to do it. wire like it shows and use the wires coming from the driver side door switch that go to the 85 terminals on your relays.
Posted By: lilc0olkid007
Date Posted: November 17, 2008 at 8:53 PM
I think I got it. Will this setup work? 
Posted By: chriswallace187
Date Posted: November 17, 2008 at 10:12 PM
If you don't care about doing driver's priority unlock, you should be able to get by without adding any more relays.
If you get a keyless entry unit with (+) outputs, you can connect both 85s on your current relay to ground, and wire both unlock/lock outputs from the switches as well as from the keyless entry unit to their respective terminal 86.
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C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
Posted By: ckeeler
Date Posted: November 18, 2008 at 9:03 AM
chriswallace187 wrote:
If you don't care about doing driver's priority unlock, you should be able to get by without adding any more relays.
If you get a keyless entry unit with (+) outputs, you can connect both 85s on your current relay to ground, and wire both unlock/lock outputs from the switches as well as from the keyless entry unit to their respective terminal 86.
actually, Chris, im not sure he can do it that way. i was looking at his setup again and its a 5 wire reverse polarity. so his switches rest a ground until he presses them. im not sure, see what you think and if im wrong, but......if he were to connect the switch outputs from both switches to 86 on his relays if he were to press lock on the driver side switch, the wire connected to 86 from the passenger side switch is resting at ground......which means........ZAP, instant short. if he connects his positive outputs to terminals 86 and the unit puts out its prospective pulses for lock/unlock to terminals 86, well......those terminal are a ground. again a short or maybe even destroy the brain. the only way i can see to do it is with 2 more relays. i could be wrong though.
Posted By: ckeeler
Date Posted: November 18, 2008 at 9:18 AM
lilc0olkid007 wrote:
I think I got it. Will this setup work?
dont wire the second set of relays like that. do them like this. cut the wires from the driver side switch that go to terminals 85 on your first set of relays and wire the cut ends to the second set of relays like shown below. 
Posted By: chriswallace187
Date Posted: November 18, 2008 at 11:28 AM
ckeeler - I did overlook that. However he can just cut the ground feeds to the switches without affecting anything. Since relays are necessary in any case with a keyless entry system, the switches need not be wired as reverse polarity.
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C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
Posted By: lilc0olkid007
Date Posted: November 18, 2008 at 6:30 PM
So how am i going to do this? Thanks everyone for your help.
Posted By: lilc0olkid007
Date Posted: November 20, 2008 at 6:50 AM
Can anyone help?
Posted By: ckeeler
Date Posted: November 20, 2008 at 8:55 AM
lilc0olkid007 wrote:
So how am i going to do this? Thanks everyone for your help.
i guess it depends on if you just want to use the relays you have now and thats all, or if you want to add 2 more relays. either way will work. the way Chris suggested is actually more simple.
Posted By: lilc0olkid007
Date Posted: November 20, 2008 at 8:28 PM
Im sorry but I dont understand what chris said about cutting the ground feed. Can someone make me a diagram or explain more. Thank You.
Posted By: vasharion
Date Posted: January 08, 2009 at 6:07 PM
Probably can use DEI 451M micro door lock relay with proper resistor (it comes with a set). Think you'll need 2 (one for lock one for unlock).
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