Good Day, i have a bottom load water dispenser (Hamilton Beach) . The pump was not working so i bought a replacement that pushes a few more litres per minute. I wired it in and now the pump will turn on for a second and spit water then repeat this every second or 2. I placed my meter at the pump terminals and the voltage never records at 12 volts. The pump just keeps repeating the behavior of spiting water. i have disconnected the small switch that act as a pressure switch. If i disconnect the pump from the electronics of the cooler it works fine.
Dont know what to do next?

Please advise

Thanks

Vald