This is the wire harness that was used with the stock Bosch Jetronic Computer system. I'm pretty sure it wont be reused with the new ECU I'm putting in the car, however, I am going to keep it just in case I need any of the connections or whatever.
After disconnecting the Jetronic systems, you will then have to disconnect the connectors that I have outlined in purple. Be sure to label the wires (both sides) so that you will know how they go back together, because, believe me you will forget. :P There will be a red wire that goes to a black connector on the fuse board, that goes to the battery and is part of this harness and needs to be disconnected as well, after doing that, there may be a few other connectors (depending on model)
At the bottom right side of this Relay panel there is a black connector that connects to the harness that needs to be disconnected, I believe this connector is used for the tachometer, will do another post when I figure out how to wire the tachometer from the new ECU to the cluster.
These brown wires are grounding cables for the harness. The bolt on the closest one will have to be removed because 3 of those grounds are to the harness.
Then you can pull out the harness and stash it away on the shelf because you may need it.
This harness should have everything for the engine, there will be another harness for the headlights; vacuum cruise motor, radiator motor wire, horn assembly, and if your model has an external temperature sensor, then that will likely be on that harness as well, however the model I am working on does not have this sensor.
That harness needs to remain in the car and will be connected to the fuse board.
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