Which Wire(s) to use when adding electrical accessories?

kiwi370z

I am in the process of installing an oil pressure gauge and the instructions are below. Just wanting to check I am wiring things safely?

I'm wanting to tap in to the interior fuse box, using an add a circuit, and so far am thinking of:

Red wire & white wires --> wire in to "Cigar lighter" using add a circuit #1
Yellow wire --> wire in to "Stop Lamp" using add a circuit #2
Black wire --> to ground on chassis

Will these wiring choices work fine? Am I safe to add both the red and white wires in to a single add a circuit?


Wiring Diagram:



My Interior Fuse Box: