well as the title says i have my original tach gauge in the rallye dash of my 73 cuda and it didnt work when i got it. and 2 locations had no wires im just going to run new wires for it there are 4 locations i just wanna know what wires go where(accessory,ground,coil neg, etc.) there are 4 locations so i dont know where the other location is since i know that illumination wire like on after market tachs is not one of them since i know the dash does the illumination not the gauge itself. and the back of the gauge does not give what location does what