Hooking two FF to same wires to batt.

Doing some rewire work on boat and was wondering if I`d have any interfernce with them by hooking both of them on the same wire back to the batt. Starting at front FF and running back an catching the FF at the dask then from there to the batt. Both would be on two single wire, one hot, one ground. ???

As long as the wire has plenty of capacity for both units it should be no problem.