I am getting another pump tomorrow it is a carter I think, and right now I am using a holley. If I set one up to run off of the factory wiring, and set the other up to run when the key is on will one be able to flow fuel through the other?

I know when I was running the holley with my factory pump it would flow through the factory pump when it first stoped working.

I just though I would ask, and see if any one else was running any thing like that. With two pusher pumps. holley and a carter, or two holley pumps.

Thanks in advance.