Josh, you could probably make it work but they are not the same. If you were planning on using the 1x6/7 harness in a 1x2/3 I think you'd be OK and would just have some unused wires. However, using a 1x2/3 harness in a 1x6/7 you are going to be missing a few wires. I suppose you could just add in the missing wires...