Help with the wiring of the fuel filter

[seawalkersee]

I scored a fuel filter off of another IDI. This one was a 7.3 with the water seperator built in. Now, there are three plugs on the fiter and housing. Why and where do they go? One on top, one on the side, and one on the filter. I am pretty sure the one on the bottom would go the the water in fuel light. One looks like a low pressure light but what about the one on top? Need a pic?

SWS

 

[towcat]

one on top. fuel heater
one on side that looks like a pressure switch is for the clogged filter light
one on bottom is for the water in fuel.

 

[seawalkersee]

Sweet thanks. I assume 12 v to each?

SWS

 

[towcat]

yes