Changing clocks......

As per my evolution of a race bike thread, I am looking as ousting the stock CBR dash, and fitting a simple electric tacho. Issue is, CBR dash has 1 big connector for all the wires; tacho, speedo, temp guage, neutral light, oil light, indicators etc. If I switch to am after market guage am I going to have to pull the big connector apart, and will this bugger up my chances of a propper race dash in the future?