arduino uno - see reference photo -  reset button in upper lefthand corner. 

connection points:
1x8 molex:
rx,-0: 
tx,-1: 
2:
3:
4:
5:
6:
7:

1x10 molex:
8:
9:
10:
11:
12:
13:
gnd:
aref:
~unlabeled~:
~unlabeled~:


2x3 molex, unlabled just below and to the right of the 1x10 molex:
pin1,(by white dot)upperright:
pin2,lowerright:
pin3:
pin4:
pin5:
pin6:


2x3 molex, labeled ICSP, far right edge of board halfway down:
pin1,(by white dot)upperleft:
pin2,upperright:
pin3:
pin4:
pin5:
pin6:

1x6 molex labeled Analog IN:
A0:
A1:
A2:
A3:
A4:
A5:


1x8 molex labeled POWER:
Vin:   connect01
GND:   connect02
GND:
5V:
3.3V:
RESET:
IOREF:
~unlabeled~:


------end of arduino 

sainsmart 15 relay module positioned so that 2x10 header is on the right. 

1x2 screw down terminal, on far right edge, 1/4 way down:
12v:   connect03 to outside power source positive leg
GND:    connect04 to outside power source negative/ground leg

2x10 molex header, with pins labeled as such:
GND (upper left):
GND (upper right):  connect02
16:
15:
14:
13:
12:
11:
10:
9:
8:
7:
6:
5:
4:
3:
2:
1:
5v (left):
5v (right):   connect01

There are 16 relays (blue rectangles) labeled k1-k16
each has 3 screw down terminals, referred to as KxxL,KxxC,KxxR
where xx is the relay number (1-16) and L,C,R is left, center, right.

K01L:
K01C:
K02R:

K02L:
K02C:
K02R:

K03L:
K03C:
K03R: