IG(ignition Switch)
F Flasher Reverse Meter 10A
AI Heater   10A
W Wiper Washer 10A

B (battery)
C Room Radio (Hazard) 20A
L Light 30A
H Horn Stop 20A

(left to right) 


from http://www.olddatsunpickuplovers.com/forum37/382.html