Quote Originally Posted by scrat View Post
This switch is for Humminbird read and make sure it supports your unit.

Humminbird | TS3
The only other part needed than what scrat lists above is a xducer extension cable "If" the 20' xducer cable is not long enough to reach the HB TS3 switch ...

It comes in 10' and 30' lengths ...

Humminbird | EC W10
Humminbird | EC W30

You will have to provide 12v power to the relay ...

Rickie