Newb Questions About 1984 Wellcraft Sportsman 228

[spareparts]

basic boat wiring color codes:
Black= 12 volt ground
Red= 12 volt positive
yellow /red stripe= start circuit
grey=tach signal
blue=temp sender
tan=temperature
purple=key on 12 volt positive
tan/purple stripe= alarm circuit
pink=fuel level sender
green=common bonding ground wire


to wire a fuel gauge, you have a purple wire(key on power) to the B+ terminal, black wire to the B- terminal, pink wire to the sender terminal. The pink wire goes to the fuel tank sender, the sender has a dedicated ground wire, it will be either black or green. It will attach at the fuel tank usually under one of the fuel tank sender mounting screws