Trying to install a remote starter in my 93 Altima. I have a black w/pink tracer wire coming into the ignition harness. From the harness up to the column is a solid red wire. It has 12v in the "On" position. Is this my second accessory wire? The white w/ blue tracer wire reads 12v in the acc position. If the black w/ pink tracer is 2nd accessory wire, do I still need to connect the #775 relay? I have a spare wire on the remote start harness that can be used for 2nd ignition, accessory, or start output.

here is a link to wiring diagrams, i think what you want is in the ' EL ' section. http://www.nicoclub.com/FSM/Altima/

As stated above, the FSM is the best bet, but it's sometimes hard to read. There are several sites with wiring for remote start and car alarm. Those might be helpful. Here is a link to one of them for your car:
http://www.modifiedlife.com/1993-nissan ... ring-info/