Hi, I ordered this unit, however it only came with the wire harness and the speedometer, but no chrome housing cover or mount bracket. Is this normal? I have a dual speedometer and tachometer that came with the bike, but wanted to change over to the newer unit. I order part 2875926 as I have seen in these forums. Searches on the internet show 2875926 in the chrome housing cover. Is this just another misleading purchase where I have to buy more parts?