I bought a relay but 1 don't know bow to hook it up. all 1 see are a new weird numbers and strange symbols what do ng mean? 2 standard bcschrstyle relay wlll have 4 or 5 numbered leads (30, as, as, 57, and sometlmes 572). why they plcked those numbers, I have no clue; but I can tell what they hook up to. 73 constant [poslbye (+)] power (usually wlred dlrecHy to car battery) 735 e coll ground (wlred to the negabye (7) battery termlnal or any grounded metal panel ln the car) rm; : coll power (wlred to the control source. could be a swltch, or lt could be the car's IGN or ACC clrcult.) 737 : swltched [posltlye (+)] power output. (when the relay coll ls powered, lead/pm a7 ls connected to lead/pln 30) 78h : [on 5 lead/pln relays only] thls lead/pln ls connected to lead/pm 30 when the coll ls NOT powered. here ls the bottom Vlew ora standard Head Boschrstyle automotlye spsr relay aonoM VIEW hymen rel-yl