Thank you for your reply confused shoes. I actually thought of going thru the wires, but since its encased in a flexible tube then wrapped in an electrical tape, I backed-out. Also, it went thru (under) the dash which is also encased, madami pala babaklasin. Actually, I did not find any dedicated fuse for the reverse, but checked all of them and they're all good. Though I found some vacant slots (except for the spare) which don't have a fuse. That is the reason I requested for an image, so that I can compare, if there's really something missing.

Thanks for sharing your insights!