Im assuming the fuel pump wiring runs along the pass side frame rail to the fuel tank. The antenna wire is routed along the left side of the X. The antenna wire is running down the left side cargo plastic,under the cargo carpet, along side the rear pass seat under the left side door post, under the drivers seat,under the floor console, under the dash to the CB. Are you getting any RF interference from the fuel pump? Ill just try running a new coax from the cb to the antenna without tucking the coax anywhere until and if the RF interference is eliminated.