2013 Toyota Camry Starter # 2

Question

2013 Camry SE "G" key.  To trigger the 2nd starter wire (My RS / Alarm does not have a 2nd starter wire), is it better to use the Starter # 1 (+) wire and the 2nd starter pulse (-) wire to trigger a relay to start 2nd starter wire or is it better to use 12+ and the 2nd starter pulse (-) wire to trigger the relay to be used to activate starter # 2?  Does it really matter?  the 2nd starter wire (-) needs to be converted to +.  Therefore, either 12+ or the starter # 1 wire are both + and I would think can be used to trigger and supply starter # 2 with 12+. Is there another way to do this?

Answer 1

You can use either way you have mentionned.

(-)Start and to trigger a relay and using the (+)Start as a source,

or

(-)Start and to trigger a relay and using a 12V as a source