We need to start with turning the key on and listen for the pump to kick on. If it is not, then we need to remove the relay and check the relay and then jump it to see if you can force the pump on.
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
Assuming that the relay is fine since you replaced it, we need to suspect we have an issue with getting the voltage to the pump as there are multiple splices from the relay to the pump.
So, I would suggest tanking a long jumper wire and run it from battery positive to the pump and see if the pump kicks on.
If it does, then you need to run a new wire.
You can also check voltage at the pump using this guide:
https://www.2carpros.com/articles/how-to-check-wiring
Please see the wiring diagram below and that will help with what I am suggesting. Please let us know what questions you have.
Thanks
Images (Click to make bigger)
SPONSORED LINKS
Sunday, March 6th, 2022 AT 4:15 PM