Crankshaft position sensor sub-harness location? (pic)

[kanekz]

Well my tach is not working right. Sputters to 2k max at times but mostly stays idle. Was told to check the crankshaft position sensor. FSM says to unplug the sub harness. I looked I cant even find the harness on my S14. The closest things is a purple connector but i dont think thats it. not sure what exactly is causing tach problem though.

Attached Pic is from FSM showing sub harness location