Hey, i have a base model 94,but it seems like there is no wiring harness whatso ever but a few wires in the back... is there a diagram i can look at to find out what is what.

 

If you're looking for the wiring harness for the head unit, you can pick one up from Metra at www.metraonline.com. They sell a bunch of different harnesses for the RX. I picked one up that went straight from the cars harness into my Sony head unit. Didn't have to cut or splice any wires. Just plug one side into the car's wiring harness, another into the head unit, hook up the ground and she's ready to go.