The fuel pump relay on the 103 is another part that we replaced left and right back in the day. The late 117s too. We use to stock them like air filters until they went to the mas relay in the late 103s. Just buy a relay. You can get a rebuild from programa or a K.A.E. or a MTC brand. Just don't buy a Euro brand unless you buy three of them and keep two in your glove box.