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Caution: Don't install a diode across any DC motor, including a power window motor, with which the polarity on the circuit reverses to change motor rotation/actuation direction or you'll 'pop' the diode like a fuse.
Use circuit protection and don't sit on your switches and you'll be just fine.
from what i understand those relays will work and i know they will. but without the diode they will eventually arc and fuse themselves hot. cause more problems if you dont have circuit protection. if you use the diode in the wrong direction you will pop that. but the part im confused about is if you use the diode in the incoming power for the relay how would it be reversed if there is a seperate relay for each function
lol no. i think i understand the relay part, but whats snubbed? and relay coils change the flow so thats were it would matter where you put the diode