Unknown parts found on truck

Hey there guys, so basically I had to look under my truck for something unrelated and I found this weird looking plate with a big connector on it that continues to run to the front of the truck. I don’t know if this is aftermarket or standard but I just need to know what it’s called if you guys can help.

The last two pictures are a black box with wires that I found under the passenger side dash, thanks in advance!

You might to add year, make, model, trim, engine etc.

Sorry about that, the truck is 2005 f-150 4.6 V8, supercab, XLT Triton, styleside. I found the device from the first picture underneath the truck about halfway under, mounted to a piece of metal. I noticed it because I had to cut wires that were going to an unwanted 7 pin trailer connection. I clipped the wires going to the 7 pin plug and noticed an unconnected 4 pole that was attached to a large diameter tube like wire that was attached to the 4 pole and goes all the way to the front of the truck connecting to different things. The plate thing in the first picture is one of them. Thanks again

1st pic is is Fuel Pump drive module. About 7minute mark.
https://www.youtube.com/watch?v=C1SdHBCujAo

Thanks Alee! Just wanted to make sure it was nothing negative. Also I found out the box under the passenger dash is normal as well

yeah i have heard that car dealers mostly used car dealers install GPS trackers that they can remotely shut down your vehicle if you miss a payment that way they know exactly where the vehicle is for the towing company or repo guy


also when you buy a 2nd hand vehicle make sure it comes with 2 keys....usually the finance company keeps a key for easy repo late at night..i had a '14 mustang gt that came with 1 key the guy who traded it in said he lost a key so i had the dealership recut all the locks and rekey and program the car before i took possession cost them 1500 dollars.

It's the Fuel Pump Driver Module - FPDM. Your engine will not run without it! These are used on returnless systems to modulate fuel pressure by varying the voltage to the fuel pump.

not all of these vehicles are return-less when i went to order a fuel pump from parts dealer they had 2 different ones one for vapor return and one without i had to phone dealership and ask what one i had which i have with vapor return so not all issues are cut and dry some take a little digging but most have FPDM including the F-Series trucks