I've posted before on this subject but still can't figure it out. Trim gauge not working. Gauge tests out OK when I ground the S terminal. Bought a new sender. It checks out OK on the ohm meter. The gauge still doesn't work. I tested continuity on the white/brown wire from the sender to the S terminal and it is OK. I wasn't able to test the black (second) wire coming out of the sender because I don't know where it goes.<br />The gauge has white/brown on the S term., black on the ground term., and purple (hot) on the I term. Any help would be great. Hey Joe Reeves are you out there??