Wire positions
 

The set of Bremi 661 wires that I purchased from FCP didn’t come with instructions on where to place them but FCP provided this for me when I asked (great company):


There are 4 wire lengths9.5"10.5"11.5"12.5"Cylinder assignments are1A= 12.5, 1B= 9.5, 2A = 11.5, 2B = 9.5, 3A = 10.5, 3B = 9.5, 4A = 11.5, 4B = 9.5, 5A = 11.5, 5B = 9.5, 6A = 10.5, 6B = 9.5, 7A = 9.5, 7B = 9.5, 8A = 9.5, 8B = 10.5

Did they not have the letters on them? The Bosch and the Mercedes have letters printed on them that correspond to what the valve cover has cast into it.

No, at least not on the Bremi 661 set that I bought.