I plan on running wire from a nearby exterior GFCI AC Box to the soffits on my house for soffit lighting.
Behind the GFCI box is the garage. I was thinking about running the romex along the bottom of the siding -> In the channel of the 90 degree vertical siding "corner" and then into the soffit.
What would be the best way to run the wire from the exterior box to the soffit? Should I use conduit or is running the wire bare but in the channels of the siding good enough?