I have a D2 in my car, but I am soon selling it to a friend and buying a D3. My question is since my D2 is already wired in, will the D3 go right into the plugs the D2 used. Or will i need to do some rewiring?

Honda Accord 2001 if it matters.

It comes with a different plug. You will just have to match the wires/colors to the existing D2 harness