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1998 Ford F-150 Door Lock problems/?'s


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adam.l.walker 
Member - Posts: 6
Member spacespace
Joined: November 26, 2004
Location: United States
Posted: December 15, 2004 at 5:00 PM / IP Logged  

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

snguyen 
Silver - Posts: 281
Silver spacespace
Joined: October 09, 2003
Location: United States
Posted: December 15, 2004 at 6:10 PM / IP Logged  

http://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.

adam.l.walker 
Member - Posts: 6
Member spacespace
Joined: November 26, 2004
Location: United States
Posted: December 15, 2004 at 6:36 PM / IP Logged  
Well, according to that link:

http://www.designtech-intl.com/Content/techsupport/documents/section04/note203.pdf

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


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