Marquardt rocker switch blanking plug marquardt 203 007 013 a black pa blanking plug for stong marquardt 1800 series switch cut outs compatible with 1800 1801 1803 1807 1808 1811 1813 1818 1846 1850 and 1858 switches marquardt 203 007 013 rocker switch blanking plug for 1800 series black