1998 Tach Installation Help

I have a 1998 ford ranger and need help locating where the one wire gets hooked up to run the tach. I know it needs to hook to the coil but this is a no distributor engine. I have the light working and the tach mounted in the truck. I just need info on where the final wire is spliced

On the driver's side of the truck, there is a clump of wires close to the firewall. Look for the tan wire with the yellow stripe. This is the one that you need to tap in to. If you can use a splice connector, it would be better than actually cutting the wire.