Front panel connectors - the white wire on each pair goes to the appropriate negative terminal. Having said that, the switches are non-polarized. It will not make any difference. My 900's use the fan LED's for a power indicator.
If the drive light does not come on, reverse the connector. With the connector backward, the drive LED is reversed biased. No current flows, so you cannot hurt it.
As far as Pin 1 is concerned, look on page 27. The relatively large drawing matches the orientation on the motherboard drawing. See where the speaker goes (pins 14, 16, 18, and 20)? Pins 13, 15, 17, and 19 are not there. Further, if you look really close, you can see labels printed on the motherboard between the socket and the edge of the motherboard.
Keep in mind that you will need a system speaker. It's not built into the motherboard and Antec doesn't include one.