help wiring lowrance lcx 15

[beaver11]

just got a used lowrance lcx 15 for my boat and the got everything hooked up and it says gps module not responding..i want to make sure i've got everything hooked up right. the wires that say nmea 2000/gps power there is a red black and a bare wire. i've got red to positive and the black and bare to negative..note: from reading doesn't the lcx 15 use nmea 0183? ive got a lgc-12w gps module it came with. ok...the other set of wires is a red black and white..i've got red to positive black to negative and the white not being used because my lowrance 480 is that way..and last an orange blue yellow and bare wire i don't have hooked up. do they need to? any help would be great maybe my gps puck is just shot.

[norma]

The LCX 15 never had a nmea 2000 network, only the 0183. the 2000 is a true network, 0183 is point to point wireing, ie the gps wires directly to the display.