Hi guys, I let my oil tank go down to near empty on my 1995 130 johnson and alarm failed to beep the low oil signal, alarm is new and beeps when key is turned on, and there is power to the tank.I installed the alarm myself i grounded the black wire to the horn mounting screw is this where it should go? This wire has an iylet on the end and the wire length is just wright to reach this screw. Is this the problem? or is my oil tank switch defective? any help will be apreseated. J,C,