Hey, Rob ~
The Brawa 5015 street light looks like a standard incandescent lamp. Neither wattage nor amperage are specified.
So far as circuitry, it could be run on either DC or AC, no more than 16 volts. Use #20 or larger for a buss wire and solder or clip the leads from the lamp in a parallel circuit. Doesn't matter positive or negative, just make them all the same. 20 gauge wire is good to 1.5 amps. #18 is good to 2.3 amps. You can check the wattage (Ohms) with a volt/ohmmeter and figure out how many lamps you can put on your circuit: VoltsxAmps = watts or watts/volts=amps.
For a #20 wire circuit, I would put a simple toggle switch, then a 1.5 amp fuseholder & fuse in one outgoing wire, then connect the lamps with one lead to each wire.
Feel free to come back with questions ~
Gordon (30 years as a licensed electrician, IBEW)
ADDENDUM: Further research on the replacement bulb, Brawa 3266, shows it to be a 16V bulb using 0.030 amps. For #20 wire at 1.5 amps, you can put about 50 on a circuit. As an electrician, I would recommend reducing that number by 20%, or a limit of 40, to keep from blowing fuses.