Red plastic paddle that illuminates when under load. Complete with locking ring and knurled cap nut. Sealed to resist water penetration. Requires 15/32" mounting hole. Fits panels through 1/4".
  
12201: Ideal for lights, blower, pump, etc.
12211: Ideal for starter, horn or choke.
12221: Ideal for running & anchor lights, wipers, manual/auto bilge pumps.
12231: Ideal for use with trim tabs