528T, keep power on few seconds
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=95897
Printed Date: May 10, 2025 at 12:03 PM
Topic: 528T, keep power on few seconds
Posted By: Bigkevin20
Subject: 528T, keep power on few seconds
Date Posted: July 25, 2007 at 9:00 AM
Hey Im using my 528T to keep power on for few extra seconds afer the ign is turned off.
I have a external DVD/TV Tuner in my Magnum on my AVIC Z2 mainly for TV use. Well when I cut my car off and leave the ign on while in park. The tv will turn back off I have to go threw the whole process of getting back to tv again and its a pain. I used the 528T to keep power to it while the cars goes off then on and was working great in my old car. Now I cant seem to get the crazy thing to work rite.
Please tell me if I have it wired correctly, I need power to stay on after ign is off.
rite now I have it like this.
Red 12v
Black Ground
BLACK/ white ign wire to TV
Yellow to 12v
brown not sure
orange not sure
no matter what combination I put brown and orange I cant get it to stay on. It will either stay constantly or not come on at all.
I think its bad do I need to buy a new one, this is so crazy.
Replies:
Posted By: Bigkevin20
Date Posted: July 26, 2007 at 8:07 AM
Also is there a way to test if it is still good or not?
Posted By: b2reptile
Date Posted: July 26, 2007 at 8:45 AM
Red, Black, Yellow - OK. The brown wire should connect to the TV switched 12v+ input. The BLACK/ White wire would hook to your vehicles ignition wire, ONLY if the vehicles ignition wire switches to ground when turned off. You may need to to do some research to find a suitable place to connect. To test- Hook up the Red wire and the Black wire to 12v+ and ground. Using a DMM, check for continuity between Yellow and Orange. You should have continuity from Yellow to Orange, but not Yellow to Brown. (assuming the blue loop is still intact) Now, if you ground the BLACK/ White wire, this should reverse. Yellow and Brown will now have continuity, but not Yellow and Orange.
Posted By: howie ll
Date Posted: July 26, 2007 at 9:52 AM
There's a loop on the 528, cut it and feed an ign or acc to the BLACK/ white, feed TV off yellow, join brown to the red 12v+ perm and ground black. RTFM!
Posted By: Bigkevin20
Date Posted: July 26, 2007 at 2:04 PM
RTFM
well TFM does not explain my problem. why would I put the tv on yellow if yellow is common?
Posted By: howie ll
Date Posted: July 26, 2007 at 4:12 PM
Yellow is the 528 output + terminal 30, brown is input 87, Orange not used is 87a, black white will give a pos feed if loop is cut thus yellow feeds your TV RTF manual that comes with 28.
Posted By: Bigkevin20
Date Posted: July 27, 2007 at 7:48 AM
Well I tried both ways mentioned above and Im not getting any clicking from the relay or any thing now. Im going to order another, I have worked with these before and have always been able to figure it out in 10 min or less.
Posted By: enice
Date Posted: July 28, 2007 at 10:08 AM
If i were you I would take the piece out and bench test it. See if actually is giving outputs or not.
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