New Holland 8010 low profile fuel pump randomly comes on when ignition switch is off.

[rowellc]

. We have to unplug the fuel pump
after we use the New holland 8010. But I want to get this back to where it is supposed to be where we turn the key on and
the fuel pump comes on and when we turn off the ignition the fuel pump will not come on by itself.

Anyone have any ideas what the issue is here and what i can do to fix it.

We replaced the ignition switch but even with a new ignition switch we can start the tractor but the fuel pump still comes on when
the ignition switch is off and as we all know if we unplug the fuel pump and start the tractor the fuel injectors become air filled then
the the tractor does not start at some point and we have to drain all the air out which is a pain in the ***.

Why would the fuel pump come on by itself when the tractor is turned off? What can I do to fix it?