Keyless Entry on 96 Crown Vic

My Crown Vic has reverse polarity ground at rest for it didnt have keyless entry already installed. I figured I needed 2 separate relays for lock and unlock, but I have one of those modules that has a built in  relay(s) and Im guessing its 2 relays in there cause all the wires are comming out the other end like its already wired up and all you need to do is make the connections. Everytime I arm I blow the fuse I tried 15, 20, 25 fuses.  And it is wired according...

-->coming from lock relay

87a to the switched side of the lock wire

30 other half of lock wire

87 to 12 volt constant is bridged from lock and unlock relay and going to one fuse bus

-->coming from unlock relay

87a to switched side of the unlock wire

30 to other half of unlock wire

--->87a and 30 are --x cut x-- on both lock and unlock so im not getting why it isnt working??

Its a Directed 451M Micro Door Lock Relay Module

Thanks for Your Time and Help

Hi VicVicious, make sure you do not have the switch side and the motor side of the lock and unlock wires reversed. What you described above is correct and will work, but if you have the switch side of the lock wire going to 30 instead of 87a and the motor side of the lock wire going to 87a instead of 30, you'll blow a fuse everytime. The same applies to the unlock wire. Double check your connections and if you still can not get it to work with the door lock module you're using, I'd suggest just using two relays instead as shown below.

Let us know how you make out.

the12volt

Thanks 12volt but do you think I should be using this setup???

Granted that I have reverse polarity, but the module does'nt have a wire for ground so I would have to run separate relays.  And another question have you ever wired up a ex-police car??  Most police cars are set up so the dome light doesnt come on when the doors are opened, but all of my doors set off the alarm except the drivers door  I tried testing for wires with 12 volts when the door is opened and grounded when closed, but I have had no luck.  So im open to any ideas that I can try.

Thanks

Hello VicVicious,

Use the diagram that the 12volt posted above.

The diagram that you are currently using is for vehicles without power locks that need door lock actuators installed.

Hope this helps.

Thanks install_tech...

Thats the one Im using (the one 12volt posted) but it continues to blow, so I guess ill just have to wire up my own relays.

Thanks All

Where are you getting the lock/unlock wires?

I've been getting them where they come in from the driver's door and go upward into a harness.  You have to remove the hood-release handle, and then the insulation material to access.  There's almost no slack in the wire, just enough to reach in there and catch it with a butt connector---soldering is not an option in there.

Perhaps you are interfacing with the wrong wires.  Or maybe you've found the wires in an easier spot than I could, which I'd love to hear about.

I pulled mine from the pass. kick panel.  Its in the top group of wires and  goes upward just as the one you speak of, but it may be easier for the simple fact that there is no steering wheel in the way.  There is not much slack in that location either, but I removed the glove box and it made the connection easier and I was able to solder.  I know I have the correct wires for when I cut them I disabled the locks...... Pink/L Green and Pink / YELLOW.  I have not  wired up my own relays as of cause works been keeping me busy, but since tomorrow is the 4th I'll throw them in in the morning and let everyone know how it went.