I am having some problems with getting my door locks to work on my 1998 Ford F-150 (w/out factory keyless entry). I searched all these forums and wired them up using the information that I found, but for some reason they still will not work. I know I have the correct wires, because when I unhook the relays, the locks don't work from the door switch. My alarm system is a Viper 791VX and I'm using Bosch 30A SPDT relays and I have them wired like this:
Relay 1:
30 - Side of cut lock wire that shows ground
85 - Alarm trigger (-)
86 - +12V (fused)
87 - +12V (fused)
87a - other side of cut lock wire (this wire shows +12V when the door switch lock button is depressed)
Relay 2:
30 - Side of cut unlock wire that shows ground
85 - Alarm trigger (-)
86 - +12V (fused)
87 - +12V (fused)
87a - other side of cut unlock wire (this wire shows +12V when the door switch unlock button is depressed)
The locks still function from the door switch, so I know the locks/actuators still work. I also checked the voltage and ground of each connection so I know that the connections show what they are supposed to. When I use the remote lock/unlock I can hear the relays switching, but the locks don't move at all. I also tried just tapping the 85 terminal to ground thinking that maybe the pulses from the alarm system weren't long enough, but still I get nothing. I'm not sure if this matters or not, but I originally had these fused at 30A and kept blowing the fuse if I tried to lock or unlock it too many times. So then I figured maybe the locks pull more than 30A, which I thought was unlikely but anyways I went to a 40A fuse and haven't blown that one yet. However, the locks still don't move unless I use the door switch. I cut into the wires from the oval oblonged panel on top of the passenger side dash, if that matters. Does anybody have any ideas? Thanks in advance.
-Adam
https://www.designtech-intl.com/Content/techsupport/documents/section04/note203.pdf
Ford | Pickup (F150/F250) | 1997-2002 |
Remote Starter Wiring Colors and Notes |
Function | | Vehicle Color | Location |
Start: | | RED / LT. BLUE | IGNITION SWITCH HARNESS |
Ignition #1: | | DK. BLUE/LT. GREEN | IGNITION SWITCH HARNESS* |
Ignition #2: | | RED / BLACK | IGNITION SWITCH HARNESS |
Ignition #3: | | GRAY / YELLOW | IGNITION SWITCH HARNESS |
Accessory: | | BLACK/ LT. GREEN | IGNITION SWITCH HARNESS |
Brake Light: | | GREEN | AT SWITCH ABOVE BRAKE PEDAL |
Tach Signal: | | RED / GREEN | AT COIL MODULE |
Parking Lights: | | DK. BROWN | AT HEADLIGHT SWITCH |
Headlights: | | | |
Diesel Glow Plug: | | BLACK/ PINK (+) | AT "WAIT TO START" LIGHT |
Clutch Bypass Wire: | | DK. BLUE/ORANGE (+) LT. DUTY | WHITE/ PINK (+) HEAVY DUTY TRUCKS |
Notes: | | *1998+ May be equipped with Ford's PATS Transponder Theft System. Use Universal Alarm Bypass Module part # 2x402 where X can be any number. |
Ford | Pickup (F150/F250) | 1997-2002 |
Alarm and Keyless Entry Wiring Colors and Notes |
Function | | Vehicle Color | Location |
Constant +12 Volts: | | YELLOW & LT.GREEN/ PURPLE (+) | IGNITION SWITCH HARNESS |
OEM Alarm Disarm: | | GREEN/ VIOLET | AT FACTORY ALARM MOD.@ DR. FIREWALL |
Dome Lights/Superv: | | BLACK/ LT. BLUE (+) | PIN SWITCH OR COURTESY LIGHT |
OEM Horn: | | YELLOW/LT. GREEN (-) | STEERING COLUMN HARNESS |
Power Lock: | | PINK/LT. GREEN (-) | FIND WIRES IN PASSENGER KICK PANEL ** |
Power Unlock: | | PINK / YELLOW (-) | FIND WIRES IN PASSENGER KICK PANEL ** |
Trunk Release: | | | |
Alarm Input Wire: | | BLACK/ LT. BLUE (+) | PIN SWITCH OR COURTESY LIGHT |
Notes: | | ** If Equipped With Factory Keyless Entry, See Note #201 - Negative Pulse Door Lock Diagram. Without Keyless Entry, See Note #203 - Reverse Polarity Door Lock Diagram. |
Well, according to that link:
it appears that I need to switch my 87a and 30 terminal connections. I'll try that and let you know what happens. If this fixes it, then let me apologize for the needless post. I was just going off the info that I found in this other post:
https://www.the12volt.com/installbay/forum_posts.asp?tid=20849&KW=ford+door+lock