Hello i have a 86 elco working on it to run a 350 l31 vortec 5700 but it does not have power at all. But that is not the case here i noticed my knock sensor pigtail is missing and it was connected to a green/dark green wire coming from the left (drivers side) of my vehicle where the bulkhead connector is at. Does anyone know what that green wire is? :dontknow: I know my knock sensor cable is a blue one from the electronic spark control module, all i need is the pigtail and connect it. By the way there is no engine codes coming up in my dash, just the regular 12 code. Not sure :dontknow: if my ecm is in limp mode, its a 5.7 anlw ecm and prom that i got for my swap.