So I've been digging on this thing for several hours

I have the ECU disconnected and the wires for it have gotten through the firewall into the engine compartment

What's throwing me off is the wires that go from the engine compartment relay to the fender area on both sides (all front lights, etc...) and then into the dash harness (I tracked them that far but haven't cut anything yet)

doesn't seem to be a clean way to disconnect them and I'm left scratching my head -- please someone tell me I'm missing an elusive obvious

 

took another look after posting this and figured it out

the driver side has 2 connectors inside the cab which can be fished through the firewall

passenger side can be disconnected at the relay box

now time to pull out the soldering iron...

 

Do what you want, but we don't remove our 3.0 harnesses. We splice the ECU connectors onto the factory harness. Or make a swap harness that adapts to 3.0 plugs to the 3.4 ECU. You should realllllly read the sticky threads, at least "swap101" before tackling this.

 

^^ this. I made my own adapter harness also.

 

been working a franken-yota

have a 96 auto harness, mt connectors and mt ecu all on order right now

read a bunch, pulled the harness to be able to work on it at a bench vs under the hood/tarp in the snow (I live in the rockies -- april always drops a few feet)

appreciate the heads up -- hoping to not make any more silly/costly mistakes

 

All you need is several inches of wire from the plugs that you cut to make an adapter harness