hey guys i just installed a GREDDY FULL AUTO TIMER and i hook up the harness and the ebrake cable and even found the speed sensor.. But now when im driving i here the horrible sound from where the ecu is located... where i spliced the speed signal wire and hooked up the wire to the timer ... why am i getting that noise..??? where did i mess up ?? THANKS FOR THE SUPPORT

 

the noise come from just past the passenger door more like inside the quarter panel. The noise starts when i turn the highbeams on and turns off when i shut them off. I had also installed a viper 690VX while i was doing the turbo timer ?? if that helps PLEASE HELP