Alright guys and gals, it has taken me too long and for that I apologize but here is the writeup on how I replaced my stock fog light switch with an OTRATTW one for a uniform looking dash.
DISCLAIMER: Do this mod at your own risk! I accept no responsibility for any damages to your vehicle while attempting this modification.
Side Note: I was not able to get the top indicator lamp to work. The Tacoma uses a ground trigger to activate the fog light relay, thus there is no electricity in the circuit to activate the light. You could wire in a relay and make it work, but that was more than I was willing to do as the indicator lamp isn't a big deal to me.
First, disconnect the negative side of your battery to ensure you don't shock yourself or short something in the truck. **I forgot to do this and spent 2 hours trying to find a blown fuse that controlled all of my exterior marker lights and dash lights.**
Next, it's time to disassemble the dash and fit the new switches. I followed BBYE V8's writeup linked below for that part.
Side Note: I moved my inverter switch to the bottom row of buttons. To do that, I had to modify the socket for the switch where the lower blank was. Just cut a small groove on the right hand side of the new socket and the switch will slide right in. I also had to cut a bit of electrical tape behind the dash to get the slack in the wires to relocate the switch.
On to the meat an potatoes, the wiring.
After you pull the OEM fog light switch out you will see 4 wires on the connector.
White with a Black Stripe: Switch Ground
Blue: Fog Light Trigger
Green with a White Stripe: Dash Illumination Ground
Green: Dash Illumination Positive
The OTRATTW switch you ordered will determine the final pin-outs of your connections. Use the wiring diagram provided with the switches you ordered. It will look like the image below or you can go to http://www.otrattw.net/wiring-diagrams.html and get yours.
What ever your pin-out, you will want to use the following connections:
White w/ Black Stripe Wire --> the pin labeled "From source with in-line fuse"
Blue Wire --> the pin labeled "to your relay or accessory"
Green w/ White Stripe Wire --> the pin labeled "Ground for the lower lamp"
Green Wire --> the pin labeled "Normally connects to your dash light circuit"
I ordered the V1D1JHHB switch so it ended up like the picture below.
You may also need to extend the factory wires like me. I recommend using a lower gauge (thicker) wire (I used 18) than the factory wire. Make sure that you keep track of what wire is what if you don't have different colors. I used two green wires as you can see, but I marked the ground side with strips if electrical tape. (Far left hole is the fog light wires in the picture below)
I also recommend soldering on the female quick disconnects to ensure a strong physical and electrical connection to the switch.
Once your wiring is prepped, plug in your switches and reconnect your battery to make sure that everything works. The lower light should illuminate when the dash lights are on and fog lights should work normally.
If everything works out, it's time to reassemble your dash and enjoy your new switches while you crack open a beer with your dad who helped a lot by working on a CB install at the same time.
This is my first writeup on here, so if you have any questions please feel free to contact me. I'll be glad to help in any way I can.