Photo?

 

Here are some pictures of it

 

that is a RFI suppression capacitor/condenser-probably something like .5 MFD,center pin wire connector just goes straight through.

 

Many thanks for your help

 

8t2 z-chev nailed it , it's a capacitor , and from the looks of that ugly solder blob on the red wire it looks like there was a past attempt to solder it with an iron that wasn't hot enough . Someone long ago likely changed the pump and didn't have the 150 or better watt iron to solder the wire correctly (a 25 watt "pencil" iron just wasn't gonna do it) . Personally were it mine I'd eliminate it altogether and if RFI from the pump was a problem I'd locate the replacement for it outside the tank , perhaps in the harness just behind the rear seatback that leads out to the tank .

 

Thanks for the tip, I think I will have the rfi outside the tank, I have to change everything, the pump, sender and suppressor are all knackered, i think it is a bit suspect that they all died together, i have checked the wiring to them which seems fine, i am no electrical engineer, but they seem OK, can't see any heated wires or corrosion on them, hopefully it was just a bad batch of parts, either that or the amount of years that they were left in bad gas, the tank was full of rust and bad gas, according to the previous owner the vehicle wasn't touched for over twelve years, many thanks and best regards