Ev-100 wired to 1199 Hummingbird

[rtsplace]

Hi Chuck, Just received my cables ST1 Adapter cable 3-pin and Hummingbird AS HHGPS. I've been told I have to cut/splice the 2 ends together ? I've bared the wires on the ST1 adapter cable and see
1 yellow , 1 red and a ground or bare wire no insulation, the Hummingbird cable has 2 leads coming from the com plug 1 marked accy-com the other marked NEMA-com I'm guessing I'll cut the NEMA-com plug off ? Appears to have 4 wires looking at end of plug 4 contacts, is there a wiring diagram or could you tell me witch colored wires to hook up to what?
Thank you Ray