Air Bag light on again....after hooking up foglights

[tacoma man.]

well i went to advance autoparts and i bought a wiring harness for my fog lights. it came with a relay and a switch. i connected everything up the way its sopposed to be, on my way down the road last night the airbag light came on, it hasnt been back on since i disconnected the fog lights the last time, so i now know that its a problem with connecting anything aftermarket to my tacoma. also installing an in dash cd player triggers it. is anybody else here having this problem? id like to have my fog lights but that red light is getting on my nerves. im tired of this and no one knows what the fix is. i feel alot safer riding the truck if the airbags worked.