wiring Dakota Digital VHX guages and Holley HP EFI and TKO600

[chpr1972]

I have Dakota Digital VHX guages and a Holley HP EFI and TKO600 trans. My questions are how do I wire the oil psi sending units, temperature sending units, speedometer sending units, and any other senders that I may have missed. to work together? How do I find the ohm? values to find out if they are compatible? The dash guages have been the car and is all wired and working. I have the trans in and in a couple of days starting on the fuel injection. It is a HP EFI unit with TPI. I am using an old style tunnel ram with 2 4 bbl and individual injectors w/fuel rails. Should I rewire the duals fans to work with the HP EFI or just use the Dakota Digital fan controller. I can wire it all separately if I have to. Any help would be appriciated.