Re: Humminbird 610 Installation
Before you drill make sure the bottom is smooth and flat in front of the transducer or a raised area (behind a step) on the bottom of the boat might cause air turbulence and cause the transducer not to work at times.
Also, my Humminbird installation instructions say to mount it at least 15 inches away from the prop.
If in doubt, just swing by a boat dealer and they can point to the best spot.
Disconnect the positive lead of your battery while you are hooking up the two wires to your fuse block. As to working with electricity keep in mind it's not 110 AC like house electricty, it's only 12 volts DC current. No big deal unless your are planning to do something stupid like touching both wires to your tongue to see if you've got juice (don't do that

).
I use 3M 4200 sealant because it's not permanent. Just dab a little on the threads of the screws before your screw them in. Drill the screw holes in the middle area of the brackets slots so you can move it up and down to adjust it. Don't drill the bottom 3rd hole if your bracket has one until you test drive it. If everything works good, then drill the last hole which locks it in place from moving up and down (not all brands use a 3rd bottom screw).
I'm sure your unit came with an installation sheet. If not download one from the brands website.
Read through it and ask back here if you have any questions before you dive into it. It's actually real easy to do even for a layman. I've probably done it about 10 times over the years (just did another one yesterday). Only the 1st time is a little scary.
Good luck and welcome to iboats, you can learn a lot here by surfing around past threads with the search feature. This topic has been discussed many times!