HEI starter wires

[camaromikey]

I have a 69 camaro that has been converted to HEI. I brought a factory replacement harness from M&H eletric that they convertered for me. Now, the starter has the ignition wire and a 12 volt feed back wire for the coil. My question is, is the feedback wire a necessity. I was going to use a 94 Lt1 starter and it only has the ignition wire. any help.