Here's the problem:
My car was previously wired with aftermarket door lock acuators that have two wires. We'll call the 2 wires; wire1 and wire2. The acuator moves one way when wire1 has +12v and wire2 is grounded. The acuator moves the other way when wire1 is grounded and wire2 is +12v.

The keyless entry system I bought can be hooked up for 3 wire positive, 3 wire negative and 5 wire reverse polarity.

Basiclly I can make the unit send out the +12v no problem but I need to make it switch which wire is grounded.

 

i didnt see a question there

 

Can anyone think of a way to hook it up? Maybe using a diode or something? Anyone encounter this before?

 

i thought actuators worked on single pulse via double pulse meaning single pulse open double pulse close and the alarm shoudl configure that to begin with already...i dont understand what your tryign to hook up tho

 

assumming that when wire 1 is +12 Volts and wire 2 is ground BOTH doorlocks LOCK... and when wire 1 is ground and wire 2 is +12 volts Both doorlocks UNLOCK...


set your system so it sends + 12 Volts when you press the Lock button, ( and +12V when you press UNLOCK)

get 2 SPST relays and wire them for aftermarket actuators:

relay 1: this will be your Lock relay ( for both doors)

87: +12 volts fused
85 & 86: your positive and negative triggers to activate the relay
( so when 85 << your +12V trigger from your system >> goes +12 V, and 86 is constant Ground, the relay will trigger Lock)


87a: goes to constant ground
30: goes to the wire 1

repeat the same for the Unlock relay and wire 2.
( so 85 & 86 are the Unlock triggers on relay 2)
85 on this relay goes +12 V when the Unlock button on your system is pressed, 86 is constant ground, and 30 goes to wire 2 on relay 2.

Now the way the way this will work is...

on both relays 87a is always grounded ( so both wire 1 & 2 have the ground signal the soloniods need)

when the lock button is pressed 85 on relay 1 goes +12 V, this triggers the relay to send the signal from 87 (+12V) to wire 1 ( instead of the ground signal from 87a) through 30. at this point wire 1 is +12 Volts, and wire 2 is still resting at ground *poof* the doors Lock.

Same deal for Unlock.

 

Now that is the creative thinking I was looking for
I'll be trying it later today, thanks.

 

the above description was excellent! just to clarify and hopefully make it simpler for anyone that didn't understand the above post:
87 = 12v
87a = ground
30 = output to accuator
85 and 86 need to get hooked up opposite (if your alarm pulses 12v, then ground the other, and vise versa if the alarm pulses ground) 85 and 86 are what causes the relay to "turn on and off"

each relay controls lock and unlock seperately, so both lock wires get hooked up to one relay and both unlock wires to the other.

goodluck and hopefully i made the description a little simpler for the unexperienced.