Pinout for the ULN2803
I assume the pinout should look something like this:

8-bit 50V 500mA TTL-input NPN darlington driver

     +--()--+
 IN1 | 1  18| OUT1
 IN2 | 2  17| OUT2
 IN3 | 3  16| OUT3
 IN4 | 4  15| OUT4
 IN5 | 5  14| OUT5
 IN6 | 6  13| OUT6
 IN7 | 7  12| OUT7
 IN8 | 8  11| OUT8
 Vss | 9  10| Vcc
     +------+
name = Chris Eheim