[KenWittlief]

if you did put a spike after a victor, even if you never reversed the victor, Im not sure if the spike would work correctly

it may only operate with 12V across its input side - the victors work by pulsing the output on and off (pulse width modulation)

I dont know if the spikes woud function that way.

All this is against the FIRST wiring rules - but it is interesting to think outside the box and gain some insite into how these devices operate.

BTW - I was pretty sure the original poster was asking if you could use either one, not both - but someone else would read this thread thinking we were saying you could use both, and would try it - so all this clarification is here for a good reason.