This is mainly used for 1964/5 Mustangs when converting to LEDs turn signals/ indicators
As they only have one tell-tale warning lamp on the dash for both sides
Fitting instructions below only relate to 64/65
Remove the dash panel, remove the bulb holder that is the tell tail as two wires on them cut them both leaving a couple of inches of wire, Connect one wire to earth and the other wire to the flasher unit marked Pand the other wire to the flasher unit marked P
Do not get the wires round the wrong way otherwise it will ruin the unit