Keyless entry on a 93 Ford Tempo

Ok, I am cutting the wire directly underneath the bottom of the door lock switch.....(the switch on the driver's side door)

Here is an exact description of the wires underneath my locks:

On the driver's side door (5 wires):

1 black wire with white stripe (12 V)

On the passenger's side door (5 wires):

1 black wire with white stripe (12 V)

Should I be cutting the wires somewhere else??? 

Also, where do you recommend that I buy a replacement door lock switch for my 93 Tempo? I have burned out one of em accidentally.... (I have special ordered one from advance auto parts, but just checkin if there is a better place to buy parts....)

Thanks for your help

- Tom

For the switch go to the wrecker and they will probably give you one as these vehicles are plentiful. The locking wire I would go straight to the motor ( between the switch and the motor ) and this would be a (+) input to the motor. Here's another question? Is the Tempo a 4 door or a 2 door version ?

Here's a side note about Ford...... I installed into some newer trucks that all the installation notes told me that the OEM RKE required a 5 wire alternating 12V positive door locks diagram and it ended up being on ly a (-) grounding system. When you get the replacement switch try this as I have conflicting wiring notes on the vehicle:

• 2 Door  - Positive Polarity Door Lock Diagram,
• 4 Door  - Reverse Polarity Door Lock Diagram.
• From another source it says that the 4 door model is a 5 wire alternating 12V positive, but both say that the 2 door version of the Tempo is a (+) type system.

I have a 4 door model, and I'm pretty sure its 5 wire alternating.....

(I could be wrong...)

Am I cutting the lock / unlock wires in the right spot or not? How can I tell if I've cut the wires in the wrong spot?

I think what you're trying to say is that on the 4 door model, I could either have "reverse polarity" or "5 wire alternating 12V positive"

Is there a quick test that I could do to figure out which one I have?

- Tom

If you cut in the wrong spot, the door locks do nothing when power is added to the actuator or relay.Try this :

• 86 : Lock from Alarm
• 87 : 12 volts constant
• 85 : 12 volts constant
• 30 : motor side of lock wire
• 87a: switch side of lock wire

• 86 : Unlock from Alarm
• 87 : 12 volts constant
• 85 : 12 volts constant
• 30 : motor side of unlock wire
• 87a: switch side of unlock wire

If the RKE has a polarity option wire ( where you can choose (- or + ) make sure that it is a (-) output. If this does not work again what you may have to do is to increase the (-) signal from the RKE by adding another relay in front of  the two relays above:

• 87 : GROUND
• 86 : 12 volt constant
• 85 : Lock wire from RKE
• 30 : to 86 of 1st relay above

Do the same for the UNLOCK wire to the UNLOCK relay to boost the signal going to the 5 wire alternating 12V positive relays.

Is there a possibility that I am cutting the lock / unlock wires on the wrong door? 

When I put 12 volts on the motor side on the driver's door, nothin happens.

Should I try cutting the wires on the passenger door, or am I just asking a stupid question....?

At this point in the installation.... try anything !! Go to the passenger side door and see if you get the locks to work.

Hmm.....I just might have figured this out......

Remember how you said that "I installed into some newer trucks that all the installation notes told me that the OEM RKE required a 5 wire alternating 12V positive door locks diagram and it ended up being on ly a (-) grounding system"??

WELL...............When I touched the complete lock / unlock wires to GROUND (they weren't cut) , .....it made the locks work......  (I'm pretty sure that this is what I did, this was a few days ago before the door lock switch was fried)

How do I wire it up for this type of door lock system???

Thanks a lot for all of your help.

- Tom

WOO HOO!!

I finally got my door locks working with my keyless entry system tonight.

For anyone who wants to know (for future reference):

1.) 4 door 93 ford tempos have "5 wire alternating 12 V positive door locks"

2.) After cutting both of the lock and unlock wires, just touching the motor side of one of the cut lock / unlock wires to 12 V  WILL NOT activate the locks on this type of door lock system (one of you guys told me that it would). You must touch one of the motor sides to ground and the other motor side to 12 V .......(reverse the two to lock / unlock the doors...... I took apart the switch I fried to figure this out the hard way)

I'm going to setup the "II" button to pop the trunk and the "III" button to pop the fuel lid tomarrah mornin.

Thanks for all of your help (although you left a few details out that I wanted to know...)

I have actually learned a lot from doing all of this myself .....(and saved $75.00 on installation)

- Tom