Humminbird SI - Finally pulled the trigger

[Les Young]

that doesn't have to be drilled, but for the life of me I can't think of the name right now. It used a strong waterproof adhesive that sticks to the transom & then the transducer mounts to it. If you have a jackplate & want it console mounted the simplest, cleanest & safest thing for the transducer to do is to get a Humminbird y cable for onplane depth readings from a regular Humminbird 2-d transom mounted or in hull transducer & drill & mount the side imaging transducer on your jackplate with a clear line of sight when trimmed down for scanning. I usually drill towards the bottom of the plate & have never had any issues with sonar bouncing inside the plate interference. Then drill 1 hole by console to run the wires through which will be covered & use a ram mount for the 998 or simply fabricate a mount to be able to install it in the dash. Of course if wanting it at the trolling motor too you can get another complete station & a trolling motor transducer & use the head unit up front if wanted when fishing. Not a big deal at all to drill the hole in the plate & only 4 screws to hold station in place up front.

[SteveM4A1]

that doesn't have to be drilled, but for the life of me I can't think of the name right now. It used a strong waterproof adhesive that sticks to the transom & then the transducer mounts to it. If you have a jackplate & want it console mounted the simplest, cleanest & safest thing for the transducer to do is to get a Humminbird y cable for onplane depth readings from a regular Humminbird 2-d transom mounted or in hull transducer & drill & mount the side imaging transducer on your jackplate with a clear line of sight when trimmed down for scanning. I usually drill towards the bottom of the plate & have never had any issues with sonar bouncing inside the plate interference. Then drill 1 hole by console to run the wires through which will be covered & use a ram mount for the 998 or simply fabricate a mount to be able to install it in the dash. Of course if wanting it at the trolling motor too you can get another complete station & a trolling motor transducer & use the head unit up front if wanted when fishing. Not a big deal at all to drill the hole in the plate & only 4 screws to hold station in place up front.

need to drill a hole for the gps puck as well...generally you want it as close to the transducer as possible for the most accuracy

[tracy]

Go to transducershieldandsaver.com check out the TM-HDSI transducer shield it can be used to mount at the trollingmotor with just a couple clamps or at the jackplate with the proper L -bracket for your boat. Call them and tell them what kind of boat and Jackplate you have and they will match you up. You don't have to worry about getting the right angle for the transducer to work properly just follow the instructions. Go to youtube there are several video's on there showing you how to mount.


I bought a 998si and an 898HDSI mounted both myself. It was really easy. Wire straight to starting battery but install a 3amp in-line fuse to the hot wire to prevent over voltage.

[Ranger_07]

I'm going to mount to the transom. I don't have a jack plate so that is out. I'm hoping we can do it without something from shield and saver. I will ask onemorecast about the fuse thing though. Thanks for the tips.

[Les Young]

Humminbird says to put one in. My current boat that I traded another for got a warning high voltage message on the screen on my 581I while running & sure enough when I looked the previous owner had never installed one. Why ruin a depthfinder over this ???

[Ranger_07]

Yeah, I'd rather not do that.