anyone used this before?

need to know which 2 go to the positive sorces..
and which one is a ground
and which is the remote/ signal

and if it matters if the positive from batt to positive on pump are mixed around etc.

 

My initial guess would be two of the pins transfer 12v to whatever it is powering and the other two control whether the 12v is 12v or 0v. I am not sure what 0 low means though (if that is what it says). Perhaps that means you leave the relay open circuit for off and grounded at 0v for on? So one control pin to ground and the other to a low side switch on the ecu possibly?

The relays I bought were one control pin to +5v and the other to a low side switch on the ecu, but they were I think a min of 3v to activate or something like that not a 0 low relay.

Again, if I had to guess I would say the top two are the 12v signal to whatever it powers and the bottom two are the remote signal. Your best bet is to google the part number and see if anything comes up.