Question on Lowrance transducer

I just bought a transducer to mount to my trolling motor for a lowrance x67c. The transducer came with an extra wire that the instructions say is for power, but it makes no mention of what to hook it up to or anything else. What is this for, why is the transducer not getting power from the graph?

the x-67 has a power and transducer cord that is all in one

u have to hook the power to a 12volt lead

also put an inline fuse in if U do not have one already

the x-67 does not have two lines to it, just one

hope this helps,

I got one on my Minn Kota 70PD/AP/US, I really like it

can see it from anywhere in the boat

Thanks for the help!