The Painless fuse block has a relay to control the ign hot circuts. The power will come from the main line in, and the pink wire only triggers the ign hot side. The pink wire used to trigger the relay will only be drawing a few milliamps (less than one amp) those fuse taps that you found will be perfect for that. (I am supprised the kit didn't come with one for just that perpuse. )The heavy wire from the block needs to go directly to the battery, and the circut breaker need to be installed as close as possable to the battery.
EDIT: Oh I almost forgot. Huh?