1955 Buick Wiring Diagrams - Hometown Buick SECTION 10-J 1955 BUICK WIRING DIAGRAMS. 10-59 1955 BUICK CIRCUIT DIAGRAMS AND FUSE BLOCK. This Section contains 1955 Buick wiring diagrams for chassis and body. The 1955 Buick wiring may be easily traced by paying attention to the color code on each wire and the color code indicated on the diagrams. 1955 Buick - Generator to alternator conversion wiring Oct 18, 2015Lets see if ANYONE can answer this question. On the voltage regulator in the 1955 Buick (Century 4-door hardtop, series 63 with 322 v-8, dynaflow tranny) there are three terminals. The one in the middle has a white wire on it that comes from the generator. That white wire has a smaller green wire..