The only parts book handy in my office is the '32 edition...for both AA's and BB's it lists an array of clearance lights (red, yellow, white, green, or blue!) and a slightly mysterious "Lamp (warning)" with either red or green lens described as a 3 lamp cluster...maybe a rear turn signal/extra brake light??
No pictures there, but I would bet that this stuff is very generic and about like the fender lights described by redmodelt.
Going to dual taillights and adding cowl lights (on cowl, perhaps, or transplated to front bumper brackets?) would allow a pseudo original look, but probably marginally effective in a world dominated by huge, bright lights at eye level.
(edit...these are actually filed in "Miscellaneous parts", placed at the very end of the big truck parts listing just like the accessory section in the car listing.)