Please identify this item

[frank-id]

This must be a relay. I removed same from my 1991 F 250. I cannot get my temp gage to work. Any connection? No pun. Frank

 

[LCAM-01XA]

I have one of these, it lives in the fat engine harness near my #1 injector, it kinda just hangs there. What it is and what it does, I have no clue.

 

[typ4]

I think it the fuel heater controll.