using a 12 volt wiper fluid pump for ballast system

[Trafficlightguy]

I need to make this reversible, I was wonder if hey sell a module for this or do I need to do this with a relay.
any suggestion or ideas
I am new to this and committed to build my WTC.
thanks for the help

[JHapprich]

Morning, could you post a picture? Have you considered a gear pump with an esc or an electric switch?

[redboat219]

Drawing by Bob Gaito showing "old school" servo operated switches for forward/reverse pump operation vs "new school" electronic speed controller.

Old:
1. using 2 micro switches



2. UsIng a Double pole-double throw switch
New:
Using cheap Chinese brushed ESC




I'm sure someone has better suggestions.