wiring hire a pro.
Before starting I collected the following stuff:
14 gauge primary wire (10 feet each of black and red)
assorted 14-16 gauge crimp connectors (blue)
crimper, wire cutters, electrical tape, etc.
1 Tacoma fog light kit from Toyotapart.com. It ccomes with the lamp housings (2), bulbs
(2), 30 amp relay, dash switch, connectors for all and repair wires. This is the $350 kit.










The light housings are very simple. Nothing gets removed it just pops into place as is.
The white nut at the bottom is used to adjust the angle (attitude) of the lamps after
installed. These seem like they could break if too much force is used during install.











To remove the dummy inserts, I crawled under the front bumper, looked up, and found
that by simply pressing the plastic tab, the whole thing popped out. There is a tab on both
sides, but I found that popping one was enough to free the insert. This picture was taken
from below the front bumper.

The dummy inserts pop out easily. It was pretty obvious how the fog lamp housing had to
go in once the insert was out of the way.



These are my dummy inserts removed. Nice cup holder or change bin?

The fog light housing just slides in where the dummy insert came out. The bottom post
goes into the molded hole in the bumper. There is a lot of plastic here, so I was careful to
not force anything too hard.



One light housing in. Actually this one was still loose. I made sure the two side posts and
rear anchor point were better secured after taking this picture.

Now both housings are in place.




For a snug, secure fit, I made sure the side posts and rear anchor were completely seated.
It would bounce around or fall out if not secured properly. This picture was taken from
below the front bumper looking up.

I had to move the adjuster nearly all the way out to get a solid connection in the hole. The
white wheel is easy to access from below the truck, so I figured I would adjust it back
later (though no real adjustment was needed in the end).


I ran my wire harness under the front bumper and secured it in a couple of places. This
shot is in about the middle of the bumper looking up. You can see the horns on the upper
left of the picture.
Just a note the wire harness from symsales (eBay) was too short to connect the lamps. I
had to add an extra foot or so of wire. It looked to me like that harness was for adding
lights much closer together than the 05-06 Taco.

This picture just shows the bulb and bulb connector in place on the harness.

The 30 amp relay has the schematic printed on its cover. I repeated some of it here and
added the color of the wires that corresponded on the connector from Toyotaparts.com. I
dont know if they arrange the wires the same all the time, so the safest bet is to make
sure the pin numbers are the same. I had to remove the wire connector to see the pin
numbers printed on the bottom side of the relay.
Pin 87a is not needed. Must be they use the same relay for DRLs or something like that.










I just attached the relay and fuse to the major wire trunk running along the right side
(battery side). I zip tied the relay above and below and tried to make it as vertical as
possible to avoid collecting water/moisture.
The lower part of the big wire trunk passes through the firewall into the cab. I followed
this and found a cool extra wire pass through that worked perfect for the fog light
switch (next page for pass through).











Here is the extra wire pass through to the cab through the firewall. I had to cut the tip off
which then exposed the tube. There is carpeting on the other side, so I used a small
Phillips head screw driver to break through first before running the wire. There are lots of
wires on the other side, so I was careful to not go too crazy pushing through. After I
pushed the wire through and connected the switch (described later) I came back here and
put a zip tie around the rubber piece (with the wires inside) to keep water and stuff from
passing from the engine compartment into the cab.

Here are my switch wires passing through the firewall into the cab. They pop through on
the inside just above the left foot rest.


The wires popped out about where the arrow is. I ran them under the dash and through to
one of the switch knock-outs. I popped out the knock-out with just a little pressure from
behind. I chose the one closest to the steering wheel, but either would have worked fine.

I had two switches to choose from, but obviously I went with the Toyota switch for that
factory-installed look. I tossed the other into my spare parts drawer in the garage.


Some switch fundamentals. I found similar info on Toyota Nation, I think from a post
from docindahouze. I checked all this out with a Fluke voltmeter using it as a continuity
tester (resistance, Ohms).









I decided to tie the switch illumination into the relay-in power (1 and 3). Now the switch
is illuminated when my parking lights are on regardless of whether the fogs are on or not.
I figured it would be a quick way for me to know if my fogs are available no parking
lights, no fogs. The switch itself makes it pretty obvious when the fogs are on, so I didnt
want to just have the switch illuminate with the fogs. And I didnt feel the need to
illuminate the switch with the dash, though that was certainly an option. This picture
shows my 1 and 3 joined, so now I have three wires left to connect.

After connecting the switch wires, I gently pulled the excess back into the engine
compartment . I neatened everything up with wire ties afterward. Here the switch is ready
to be pulled back into place.
I found that the switch didnt fit into the hole at first, so used my Dremel with a little
drum sander bit and utility/razor knife to knock off the left chunks of plastic. This was
pretty easy to do.

Everything on the cab side is now neatly in place. Extra wire was pulled back into the
engine compartment and all wires were wire-tied to existing wire harnesses under the
dash. I had to be especially careful to keep the wires away from my clutch pedal.
Looks pretty damn good if I do say so myself!

Then I went back into the engine compartment and cleaned up the wiring. Mostly zip-tied
any loose wires to make it look nice.










One of the last things I did was connect the power wiring. I hooked my ground wires
under the bolt holding the fuse box to the side. There is a major ground wire just a few
inches in front of this, but I decided to stay away from any factory wiring. I didnt want
to give my dealer any excuses to void my warranty if a chip blew out. In fact, this fog
light addition is almost completely independent of factory wiring except for the tap off
the parking lamp and there are no chips around that connection.

I disconnected the drivers side parking lamp connector and tapped my relay to it using a
pretty standard crimp-style 14 gauge wire tap/splice. The green wire for me was positive,
verified by voltmeter before cutting in.

Then I just plugged the parking lamp connector back into its place.

The last thing I did was connect to the positive terminal of the battery. I loosened the nut
behind the terminal and slide the spade connector under. I had to widen the gap on the
space connector first with a pair of pliers.
I then pulled the red cover back into place and that was about it. Testing showed that
everything worked fine.

Here are th new fogs.

Here is the fog lights on at night.






Here is a wiring diagram:

And here is a stock wiring diagram: