Key on power in the engine compartment

[Slapps74]

I am adding an auxiliary fuse box for my water meth pump. I need KEY ON 12 volts. Where would be a good place to tap in?

 

 Thanks 

[austingta]

You could tap the load side of most any fuse, but the wiper fuse seems best because you would never use your wipers at the same time as the methanol pump!

[Slapps74]

Thanks that’s a good point. I was thinking of pulling keyed power of the small termal from the starter......