hi i have a ls 1.8 in my 91 civic my temperature gauge is not working i tested the fan control switch and when i jump them the fan comes on i also just installed a new fan control sensor like two months ago this problem started yesterday when i install a new pigtail for my computer i had someone else do the wiring before i tryed runin the positive wire into my computer slots d13 (engine coolant temp sensor) n slot a12 (radiator fan control) but nothing gauge still not working the fuse is good like i said the fan comes on when i jump it. i have no check engine lights on seems fine. can you help please?