Is it possible to make a Self Illum bumped shader using uv2 for an illum map

Hi, this might sound kind of noobish, but has anyone come up with a way to make a self-illum shader using uv2 channel for a self illum light map. I know the legacy lightmap shader uses the 2nd uv channel. The reason for it is because the main tex channel is tiling a texture, and i want to make a second uv channel and bake in lights from a 3d package. that way the model will retain the high res details from the tiled diffuse/normal map but have a colored glow from the illum map.