adding 5 wire switch to aftermarket keyless
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=123276
Printed Date: May 10, 2025 at 4:30 AM
Topic: adding 5 wire switch to aftermarket keyless
Posted By: nfrank89
Subject: adding 5 wire switch to aftermarket keyless
Date Posted: August 27, 2010 at 3:58 PM
i need help real quick! i installed 4 actuators and a ungo k20 keyless entry system in a 2005 civic dx sedan. the owner wants me to add a 5 wire reverse polarity switch so they can controll the locks inside the car too. i wired it directly into the blue and green wires for the actuators and it worked but it blew the keyless entry fuse. do i have to use relays to isolate them or is there a easier way to make this work?
Replies:
Posted By: howie ll
Date Posted: August 27, 2010 at 4:16 PM
Use a 5 wire window switch aka DPDT, momentary. Available from Spal as window switches, you may be able to buy one without the window markings.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 91stt
Date Posted: August 27, 2010 at 5:18 PM
does the ungo have on board relays?
or only low current outputs?
did you add the switch as a primary or secondary?
it should be secondary. see attached pic
 ------------- This information is provided only as a reference.
All circuits should be verified with a digital multi-meter prior to making any connections.
Posted By: howie ll
Date Posted: August 28, 2010 at 4:13 AM
Actually, if you had to add relays, then simply a 1 pole change over momentary contact switch will do.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 91stt
Date Posted: August 28, 2010 at 1:34 PM
I'm not suggesting that he adds relays. I have no experience with the k20 but from his post it seems it had on board relays. If he already had the 5 write switch, he would need to install it as shown as the secondary switch.
-------------
This information is provided only as a reference.
All circuits should be verified with a digital multi-meter prior to making any connections.
Posted By: howie ll
Date Posted: August 28, 2010 at 2:00 PM
I'm sorry 91, I just jumped in without thinking about the set-up which to me in hindsight wasn't explained too well.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 91stt
Date Posted: August 28, 2010 at 2:05 PM
I'm making assumptions according to what is in his post. I may be totally wrong until he answers the questions I posted.
-------------
This information is provided only as a reference.
All circuits should be verified with a digital multi-meter prior to making any connections.
Posted By: howie ll
Date Posted: August 28, 2010 at 2:25 PM
I quite agree, also with your first post ref the second (right side) switch that's exactly how a Spal (or DAV) switch is wired.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: nfrank89
Date Posted: August 29, 2010 at 2:06 AM
okay, yeah i figured it out. there were on board relays. i changed the input for the relays to ground then wired up some external relays and made the 5 wire switch a 3 wire ground switch. now it works perfectly. thanks for looking into this tough. pretty simple answer i should have known... it was a long day...
Posted By: howie ll
Date Posted: August 29, 2010 at 2:35 AM
Waste of time and money, you should have left it as original and used a 5 wire switch as 91st said.
It's exactly the same as wiring satellite switches when installing power windows.
-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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