I did some harsh digging last night, and I read from one guy that Nissan put faulty boards in for the speedo from a non-reputable company, and heat/cold makes the solder come loose. My mom and I are going to resolder mine completely (suck the old out, and put new solder in) and I'll tell you how it works out. I think my problem is in the speedo tho, but thanks for the advice on the wires. If the resoldering doesn't work, I might have to ask for the wire colors. Where do you work exactly?

Caleb