ECU prep

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.

This is the heater core box, which is directly behind the Center divider in the dash(in this car at least)
Inside this box contains the heater core.

After removing the A/C box from the heater core box you then remove the two bolts in the blue squares(engine compartment) and for reference marks the red box is coolant hose connections left goes to engine and right goes to radiator(might have mixed those two up) and the purple box is the throttle cable

This is the heater core and the motor part of the blower motor, both are being replaced, as the heater core Ruptured in the past and would not be fun to have rupture again.

This here is the air conditioning box and that hole there is where the blower motor fits into, the blower motor being the thing hanging how. This is behind the dashboard which has been removed on the passenger side but to get this out i pulled the big metal tab at the top out and then I went into the engine compartment and Removed the windshield wiper blades and the plastic trim piece next to the window pretty easy. Then you should find something that looks like this to the left.

There will be a sensor mounted to that plastic box, remove that(2 screws) and then there will be 2 studs with lock nuts, those need to be removed also. There also is a mesh sheet over this; i removed this, however, I am not sure if you will have to. After doing so, I just took a mallet and a pipe and gently tapped out the air conditioning box.

Floor board mold/rust and insulation removal

Upon removing the seats, carpet and insulation I came across mold growing on the floor and rust forming. I have begun removing the old tar based insulation

Wiring continued

This is another angle of the Control cluster wiring  and the relay board, a good deal of these wires will be torn out and replaced for the new ECU(engine control unit) that will be installed, I will get pictures of that soon.

Beginning of the wiring for the project

Most of the car is disassembled before beginning this blog however I will try to be a thorough as possible for anyone trying to do this.
In this picture is the wiring assembly behind the dash board, steering column and control cluster.
The two white connecters near the bottom of the picture are (left) headlights and (right) turn signals and wiper blades, and by left and right I mean if you where sitting in the drivers seat.

To be continued