Shakman
Things to keep in mind:
1. Do not use red or green lights. It will confuse other boaters trying to discern your navigation port/starboard lights.
2. Use white lights below the gunnel to shield other boaters from seeing the white light.
3. Do not run with any whites lights on that are...
I agree 16 ga wire is fine. Just remember, use marine grade tinned copper wire. Don't be the guy using cheap Chinese "copper clad" aluminum speaker wire even for speakers. Even American made pure copper wire without the tin coating on each strand will be subject to copper oxide growth in marine...