Place the 555 timer chip in the middle of the breadboard. The notch in the chip indicates the top of the chip and the left side is pin 1. If you place the chip at the top of the breadboard the pins on the left side are numbered the same as the chip.
Pins of the 555 timer:
1 = GND = ground
2 = TRIG = trigger
3 = OUT = output
4 = RESET = reset
5 = CTRL = control
6 = THR = threshold
7 = DIS = discharge
8 = Vcc = positive supply voltage
To learn more about the 555 integrated circuit go to the wiki page on 555 timer IC
There is a good pin out diagram with colored pins that you can use as a reference. Alternately you can search for the 555 datasheet. The datasheet (normally in PDF format) contains lots of technical details about the 555 timer.
Make the basic 555 timer connections:
Wire pin 1 (GND) of the chip to ground.
Wire pin 2 (TRIG) of the chip to pin 6 (threshhold).
Wire pin 4 (OUT) of the chip to pin 8 (Vcc).
Wire pin 8 (Vcc) of the chip to power.
Put one 4.7k Ohm resister from pin 8 to pin 7 (DIS) on the chip.
Put one 4.7k Ohm resister from pin 7 to pin 6 (THR) on the chip.
Put one capacitor from pin 1 (GND) to pin 2 (TRIG) on the chip. Please note capacitors have one electrode that must be connected to ground. This is indicated by the negative sign on the capacitor.
The steps up to this point are a basis for many common 555 timer circuits (Astable operating mode). Only a few more connections and you could make a simple blinky 555 timer circuit. The 555 chip can be use for many different applications including Pulse Width Modulation (PWM) and tone generation
. As you learn more about the chip be sure to check out the Monostable, Bistable, and Astable modes of the 555 timer.
The next steps are exclusively for the turn signal circuit.