Re: Nissan Remote "How it works?"
Yes, you need both cables. If the motors are both 2-strokes, your control is probably OK. Current TLDI controls are a bit different. Both cables attach via clevis fittings, available at any dealer, in the industry-standard manner, and are adjusted with 10-32 locknuts. Cables are purchased by the foot. Typically, both cables want to be the same length.
You will also want to confirm that the electrical "umbilical" cable and fittings match up correctly, so that you get all functionality, including the push-to-start capability.
When discussing parts and service for Tohatsu/Nissan OB's the critical thing is always precise model number (of the format NS30A3 for Nissan, or possibly M50D2 for Tohatsu. The model can usually be found on a silver label on the transom clamp. The prefix letters describe the brand, the numbers are of course horsepower, and the suffix describes major and minor revisions.