Hey, brother Tenncrappie .... would that be a Gen 1 or Gen 2 ??

Here's where to look for the Operations Manual & all the other guides : Lowrance HDS-5 Gen2 | Fishfinder GPS Chartplotter - LOWRANCE | Marine Electronics

If you still can't figure it all out .... you could always take it off the boat & see if you could make a sale or trade for a comparable HB unit, over on the Personal Classifieds Forum !! (just sayin' !! )

... cp