You aren't an electrician, you are a boater. You want to spend more time out on he water and as a little time as posible tying to get your electronics up and running. This SB-9BL Switch box
switch 2 Transducers for 1 Sonar unit. Works with: LCX-110C, LCX-111C HD, LCX-112C, LCX-113C HD, LCX-17M, LCX-20C, LCX-25C, LCX-26C HD, LCX-27C, LCX-28C HD, LCX-37C, LCX-38C HD, LMS-480, X102C, X125, X135, X-510C.
Specifications and Features:
SB 9BL Switch Box es
Switches 2 Transducers between 1 Sonar unit
Works with: LC x 110C, LC x 111C HD, LC x 112C, LC x 113C HD, LC x 17M, LC x 20C, LC x 25C, LC x 26C HD, LC x 27C, LC x 28C HD, LC x 37C, LC x 38C HD, LMS 480, x 102C, x 125, x 135, x 510C