Quote:
Originally Posted by rodstored-72
57 taskforce,
Thanks for the reply. since this is a daily driver situation I am needing to keep all the emissions stuff intact so my impression is in trying to keep as much of the factory wire components in tact. I agree that the main wires to connect are minimal, I am just not sure where the truck wires are to connect to the harness wires and how. I am still leaning to trying to use the factory fuse box as the harness connects to it and is clean connection.
thanks
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I’m not sure honestly where your going with that? It’s all up to you which circuits you keep or delete.... there’s really anything much in that huge wiring mess that corresponds to emissions. As far as I can think (correct me if I’m wrong) the only emissions systems on most of the ls stuff is pcv, evap and cats... I know some of the early ones had egr but that’s a small number I believe. You can easily control evap and the rear 02 sensors thru the ecm as that’s how they are controlled to begin with. You don’t need the whole fuse box for that. But if you’d like the whole box that’s fine too just not necessary for emissions.
Edit. The computer has the outputs in the connectors for all the emissions related components. All you have to do is leave those circuits pinned in the connectors and hook them up to the individual components they control like the rear 02’s or the purge valve, etc. The advantage for me in not using the factory fuse box is it’s much simpler to wire everything in and trouble shoot if there’s issues not to mention it takes up way less space. For my setup there’s 4 relays and 4 fuses and that’s it. You can add more relays or fuses easily if need be. Again if your set on the factory box no worries I totally respect that.