Big_man

Hi Guys has any one wired up standard mk1 xr2 clocks to a frst engine? The rev counter isnt working, when I took the clocks out it looked like there was a wiring plug missing from the rev counter???? if this is the case can I just fit the standard plug back in when I get one? And lastly how do I go about wiring it up?
I'm a bit of a newbie with anything newer than a xflow. Thanks in advance