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I'm trying to switch my extruder to E1 because the extruder overheats immediately when in E0. I've switched E0 and E1 in pins_RAMPS.h like I've seen in other forum posts, but that isn't working.

Do I have to change anything in configuration.h? What are all the steps to switching?

I'm currently using Jim Brown's Marlin config.

EDIT: I've used M302 S1 to test my stepper motor on E0 and that is working fine. It's the E0 heater cartridge port that has a short and always has voltage. New question: is there any way I can disconnect that E0 port? Bc now it's always putting out unneeded power.