The final step in installing the fish finder on you craft is to install the control head itself. There are some things to consider when choosing  the right location for the control head that need to be addressed. Of course these decisions have to be made ahead of time before all the cables are routed.

      Make sure the cables you installed have enough legnth to reach the location of the control head. If you need an extension cable, order one, but DO NOT try to splice cables together or you will severely hurt the quality of the fish finder's functioning. Most units are similar but are not exact. These instructions can be used for most units. First you must assemble the mounting bracket on the control head. Follow the instructions that come with your unit. The base usually screws down to the surface of the mounting area, depending upon where you intend to mount the unit. Place the control head with the bracket attached to make sure that the unit fits and is a good location. A good location would be one that is easy to monitor and is not in the way where it could be bumped or hit while moving around the deck. When the correct placement is acheived, disassemble the bracket from the control head and secure it to the surface that you have selected. The base usually attaches to the control head by a way of wing nuts or screws that are easily taken on and off. When the base is completely secure, you may attach the control head and take the final step of plugging in the cable for the transducer and the power source. You are now fully assembled and ready to use the unit. Happy boating and good luck fishing. This completes the 3 part series of installing a fish finder. I hope this instruction is helpfull to anyone who would need it.