DIY 12V sprayer

Notice that he used a 12V "bypass" pump rather than a "demand" pump. The cutoff switches in the demand pumps don't seem to last for me, I've gone through three pumps so far and the switch has been the death of them all, the motor will run if you bypass the switch.
 
Notice that he used a 12V "bypass" pump rather than a "demand" pump. The cutoff switches in the demand pumps don't seem to last for me, I've gone through three pumps so far and the switch has been the death of them all, the motor will run if you bypass the switch.
The switches are cheap, and held in place by 2 screws - plus one for the terminal cover. Don't throw the baby out with the bath water!
 
The switches are cheap, and held in place by 2 screws - plus one for the terminal cover. Don't throw the baby out with the bath water!
Maybe I haven't found the right source for replacement switches, I can find a replacement switch at the same cost as a new pump.
 

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