hello, recently purchased a 1977 25 horse Johnson electric start with the typical 70's white OMC single lever Control (Black handle, with red underside depress lever) - when I took it apart to check it out, noticed there was no alarm horn. There were 2 purple wires with terminals & 1 tan wire with terminal - connected to NOTHING. --Would this prevent the motor from starting when I turn the key? - (Is this breaking the electrical circuit, or is it an optional thing?) Can they be "jumpered"?