RFI Kit for Electric Fuel Pump Interference (4 filter set)
Many older cars/trucks have a fuel pump in the gas/diesel tank that emits RFI through the external guage connections. The simplest solution is multiple ferrite beads on the fuel pump connection wires outside of the fuel pump. You may need to left the car/truck to gain access to these wires. Use two FSB31-1/2 snap on beads on each wire (usually 2 or 3 wires depending on make/model). Works on boat fuel pumps also.