My first time post. A humble attempt to pay everyone back for the great info I have got from this board.
After a lot of research I've found a cost effective way to add fog lights to my new 2012 Tacoma. As we know the lights are different from earlier years and there is no factory fog light kit available. After some time snooping the dealership's computer I found the part numbers for the lamps, relay and switch. My truck has the fog light wiring harness installed. I suspect all 2012s have the wiring harness. I noticed the fog light connectors bundled up and zip tied underneath the headlights.
After cross checking the part numbers I found that the 2012 Tacoma fog lights are the same part number as the fog lights for 2011+ Siennas and 2008-2011+ Avalons (maybe more).
On ebay you can find OEM Style 2011 Sienna Fog Light Kits for about 115 bucks. (pictured below) You will have to discard the wedge shaped plastic trim piece that is exclusively for the Sienna. The lamp itself is exactly what you need for an OEM fit. Add the Tacoma specific relay and switch assembly and you have an OEM style 2012 Tacoma fog light kit for under 250 bucks. (Im not sure if the relay and switch included with the kit will work for the Tacoma).
Your other option is to buy the individual parts from the dealer. Its expensive, but not too bad. I'll post the Toyota part numbers and prices below for everyones convenience.
81210-08020 RH Lamp Assy $185.44
81220-08020 LH Lamp Assy $185.44
90080-87026 Relay $73.73
84160-04020 Switch Assy $54.45
Grand total from Dealer 499.06
Grand total using my method roughly 250.00
You might be able to find a less expensive, after market relay. Im just using dealer pricing.
BTW, I purchased the Blinglights kit that was supposed to be specific to the 2012. Its not at all. Lens size isnt perfect. Mounting bracket wont work and the switch looks like something suitable for a go-kart. I don't recommend it.
I haven't installed this kit yet but I will post pics once I get them installed. Judging by the part numbers, it should work flawlessly.