B - Battery
B Wires
- Yellow β Starter relay terminal battery supply
- Yellow β B terminal of the ignition switch
- Blue/White β Cigar lighter
A - Internal connection from terminal B
A Wires
- Green β Stop lamp switch
- Blue/Black β Clock
R - Connected to the A terminal in the park or headlight positions
R Wire
Black β Tail and license lights
D β Connected to the B terminal through the 7.5-amp fuse
D Wires
- Green/Yellow β Left door jamb switch for the interior light
- Green/Yellow β Right door jamb switch for the interior light
P β Connected to R and A terminals in the park position
P Wire
Black/Yellow β Parking lights
H β Connected to R and A terminals in the headlight position
H Wire
Red/Yellow - Headlights
(to the dimmer switch on the floor)
I β Connected to R through the rheostat (resistance changes as the dimmer knob is rotated)
I Wire
Blue/Red β Instrument panel lights
doug7740
1955 Thunderbird Blue