http://www.nastyz28.com/2gcog/tech/u14swap.html in the process of doing the conversion... I already swapped all the pins around at the plug. For the Tach to work: Per the instructions in the link... the #4 brown wire pin that is first pulled can be plugged into #1 spot of the harness, and then a wire ran from that to the tach connection of the distributer so that the tach works. I'm assuming to do this, I cut the brown wire completely and connect the new wire coming from the distributer to it, or does the brown wire "not" get cut and the wire from the distributer simply gets spliced into the complete brown wire? Not sure if my question makes sense. LoL. I guess what I'm trying to say is, do I cut the brown wire completely, or does it need to stay intact and just splice in the wire from the distributer? Also... what is the brown wire originally for? Is it a hot wire? For the temp gage to work: I obviously have to get the correct sending unit... but what wire from the engine side of the firewall would I use for the sending unit?