actually i did ground my pump as well I just forgot........ i did some research on fpcm for other cars and came up with some interesting facts one was that its linked to the oil sender pressure sensor so no oil pressure no fuel pressure, another was that some are linked to a restraint control module so if your in a crash stops fuel and one more was that they normally operate in 2 ranges hi and low, anyhoo thought you might find it interesting to know some reasons why they are there.