i have a 97 xlt and i just put some oem fogs on it today andi had to change my switch and me doing that made my auto lamps go bye bye my question is, is there any way to run a jumper wire so the auto lamps come on and for the fogs to come on with the auto lamps. please help

 

Put the original switch back & wire the fog lamps up so they're triggered by the parking light circuit, with an inline kill switch to disable the fogs.

 

and what colors would all that be

 

You wire the fogs in right near where the fogs are. Run a power wire to a relay from your battery...fuse that. Run a wire from your parking lamp (use a test light) to the relay that when it's powered, it will turn the relay on. Ground your relay...ground your fog lights...you're in business. If you want an override switch, run that ground wire off the fog back through the cab and install a switch then ground the other end of that switch. Good luck.

 

I don't know the specifics about '97-up trucks, but deapea's description will work. Ford generally uses a plain Brown wire for parking lights.

 

Here is the 1997 EVTM for Fog lamps:


This is not as simple as the 00 to 03 MY trucks, as with 97 to 99 MY trucks, the ground for the fog lamp relay coil is what is being switched.

** Please confirm that the fog lamps are 100% operational ( as factory ) with the new fog lamp main headlamp switch.

If so continue.

If you install your old switch, you should have some additional wires not doing anything, but connected to the harness.

1. remove fuse panel fuse #27 5 A
2. remove the yellow wire on the main headlamp switch pin #2, and connect to known good ground lug ( be careful, not all metal screws are ground under the dash ).
3. remove the white w/ black stripe wire on pin #4 from the main headlamp switch.
4. Splice brown ( parking lamp circuit ) to the white w/ black stripe wire removed in step #3.

With this, once you turn on the parking lamps, the fog lamps should come on. If you want an additional switch to turn them off, this is installed between the white w/ black stripe wire, and the brown wire.

do not splice the wires, leaving them in the main headlamp switch connector, remove them from the connector

If you want to test this, you can pull the switch, and temp in the yellow to ground and white w/ black stripe to a power source, and the fog lamps should come on.

 

sscully sounds like a great idea but are you sure this will work the fact that my auto lamp switch is not fog light enabled. i have already spliced the brown with the white with black stripe but i have 2 white with black stripes sticking out of the same plug. and i only used 1 of them

 

As that diagram shows, they're connected already, so connecting to 1 connects to both.

 

could i just jump the auto lamp wires together to make it turn on

 

What wire are you referring to ?
Autolamps are not shown on that diagram, only the lead to the DRLs, and that is incomplete.

If you have the wires in the connector that I listed above, and install your old switch, it should work.
The directions I listed above were to have the fog lamps come on anytime the parking lamps are on. Don't skip any of the steps, as a 97 fog lamp switch is switching ground to the coil.

This is assuming that the fog lamps work correctly with the fog lamp type main headlamp switch installed.

Q1. Do the fog lamps work as factory should with the fog lamp type main headlamp switch installed ?
Q2. Did the truck come from the factory with the fog lamps ?
Q2.1. If not, what MY truck fog lamp main headlamp switch did you get ( 97-99 or 00-03 ) ?

 

the steps you gave me to hook the fogs to the parking lamp circuit are these going to cause any fuses to continually blow or wires to melt.

A1. i have modified my switch and wires for the fogs to come on with my parking lamps and still be turned on and off. i did not wire them to th parking lamp circuit. i also have my fogs stay on with my brights by splicing the brown and the white with black stripe wires together.

A2, A3.no my 4X4 truck did not come with factory fogs. so i bought oem ones along with the oem 97 switch. and to hook them up all i did was plug them into the wiring harness that came already installed on my truck by the factory and i put the new switch in.

 

Well considering you are drawing power for the fog lamp relay from the parking lamp circuit now, you have the same thing after the modification I listed ( post #6 above, brown wire = parking lamps ), in addition to splicing the ground constant on ( what is switched to turn them on & off ).

The modification that you did was to change where the power for the fog lamp relay coil was obtaining power from.

Via fuse #27, the White w/ black stripe wire is power from the low bean circuit from the MFS.
This is why, when you pull back on the MFS for FTP mode, or push the MFS forward for high beams, the fogs turn off ( removes power from the relay coil, as the low beams are off ).

The modification that I listed above obtains power from the same place you have it today, and ties the ground on the relay coil to ground, rather then obtaining this from the circuit completion on the fog lamp switch.
This is one of the reason I asked about the MY fog lamp switch, this is how the MY one you have works ( power to one side of the coil from the low beam circuit, the ground is switched via the fog lamp switch in the main headlamp switch ). The 00-03 works a bit different, this is why I asked for confirmation on which you had installed.

So if you change the main headlamp switch back to the auto lamp style, remove the yellow wire on the main headlamp switch pin #2, and connect to known good ground, this would make is so any time the parking lamps were on, the fog lamps will be on ( all positions on the auto lamp main headlamp switch ).

** IMPORTANT : Remove those pins from the main headlamp connector, prior to installing the autolamp switch back in. No telling if the pins are dead or not, and rather then chance a problem, remove the pins, and tape them up.

If you want the ability to still turn them on / off, install a switch between the brown wire & the white w/ black stripe wire. This will remove power from the fog lamp relay coil, and turn the fog lamps off.

As to the AMP draw question, I am inferring ( not to say your are implying this ), the actual load of the bulbs is in the Normally Open contacts of the *** lamp relay, via the 15 A fuse.
Just thinking about it, you are actually removing a small load ( talking tenths of an AMP ) from the MFS.

Hope this helps, if not let me know what I missed.

Good luck