97 miata, light flash

I'm a do-it-yourself hobbiest and I've pretty much completed the installation of a Viper 350HV in my 97 Miata. I've added aftermarket actuators for the door locks and the relays to control them and everything is working fine. The only place I'm confused is the light flash connections. Looking over the Miata wiring diagram I understand I should be hooking the white wire from the 350 to the RED / black wire that controls the lights at the fuse panel, but I have 3 questions;

1) Is a relay required? There's no mention of one in the install guide, other than for systems drawing 10 amps or more, but based on the basic light flash diagram one is used.

2) Is the jumper at the brain set to positive or negative? The wiring diagram doesn't say if the RED / black wire is positive or negative as it does for the headlight , door trigger and horn wires.

3. In the note for parking light systems that draw 10amps, it says the jumper must be set to negative and a relay installed on the white wire. Does this mean the jumper remains negative regardless of whether its a + or - system?

as far as the polarity of parking lights it is probably + of of alarm...im assuming you used/have a DMM or test light...? Put black lead on ground...Put red lead on the white wire...Press lock and see if you have voltage on your meter...if it flashes 12.6 volts it is positive...as far as the draw of a miata's parking lights i do not know...did one about a year ago and did not use a relay...hope this helps

Thanks for the response Tommy.

I should have mentioned I have used a meter on the white wire and it does currently show as positive, but there is also a jumper on the 350HV unit to switch the polarity of the white wire.

My concern on the polarity is the install manual has the following concerning the white H1/2 wire:

"IMPORTANT! DO NO connect this wire to a negative vehicle light flash wire before changing the programming jumper to the negative polarity position or damage to vehicle light circuit may occur."

Thanks for the help everyone. I didn't think of picking the wire up at the switch that may have been easier than locating at the panel amongst all the wiring there. I did check the light in the trunk and the RED / black (drivers) and RED / green (passenger) both have + voltage when the lights are on and nothing when the lights are off. The dimmer doesn't affect the voltage. I'll won't have time to get under the dash to make the connections until sometime this weekend, but I'm pretty sure I've got the answers I need.