Viper 4105v install
 

I'm installing a viper 4105v in my 02 tacoma for the first time and have 3 questions. Viper's install guide has unclear directions.

1. On the main harness, what does the white "(+-) light flash output" go to? I'm thinking it goes to the parking lights (+) in the front of my fuse box
2. On the same harness, what does the yellow (+) ignition out (to alarm) go to. I assume the siren, but I am connecting the brown to my horn, so maybe I don't need this?
3. On the (-) 200mA Horn Output, will I need a relay? The warning says "Never connect a 200mA low current output directly to a motor or high current device without a relay.

Really appreciate the advice.