Installing a Garmin 440

[rnl]

We just recently had a garmin 400c depth/fish finder installed on our boat. Not a week later our GPS unit was stolen. now we have replaced it with a Garmin 440. i was thinking that the transducer for the 400 should be compatible so before I wired it I decided to plug in the depth finder cable to the GPS. The GPS worked, but it would not read the depth. I haven't had a chance to mess with it but I figured I would see if anyone had any info for me.

 

[The Great Escape II]

Re: Installing a Garmin 440

Call Garmin's customer service and they would be able to tell you if it's compatible.

 

[Barnacle_Bill]

Re: Installing a Garmin 440

Were you in the water when you tried it? It should work.

 

[rnl]

Re: Installing a Garmin 440

Yes I was in the water when I plugged in.

 

[dingbat]

Re: Installing a Garmin 440

Do you have a Garmin 440 or a 440S? Only the 440S supports a depth finder function.

 

[rnl]

Re: Installing a Garmin 440

I have the 440. I was under the impression that the only difference between the two was that the s came with a transducer. When I go into the menu function and information there is a place for water depth, but it reads 0.0.
If there is a difference in the unit itself then I will probably just return this one for the s model.

 

[dingbat]

Re: Installing a Garmin 440

Looking through the manual it appears that the 440 will support a depth finder but you must add a GSD21 or 22 sounder module (page 32) to the unit.

 

[Joebklyn]

Re: Installing a Garmin 440

Can you take the Garmin 440 off the boat when your not using it? I'd like to get one too.