Crankshaft sensor, fuel pump relay

[Porkchop32]

Hi all
I have a 2003 xc70
It has an intermittent no start with ecm 5200.
When I crank it no rpm registering on dim.
This morning it decided to start seems to run fine.
1. Years ago I replaced the Crankshaft position sensor of course the brack broke also the connector.
After the repair I would get a low signal from crankshaft sensor message.
2. If I crossed the wires to the sensor during the repair could it caused issues.
3. Looking for fuel pump relay and relay location.
Thanks
Mike