I’m working on fuel injection and electrical items.

First picture: Under the front of the car, I routed the vacuum lines from the engine to the reservoir canister and to the brake power booster. I used a semi-rigid polyethylene line for most of the length from the engine, through the passenger compartment, to the vacuum reservoir. I ran the starter cable on the right side of the car along with the polyethylene vacuum line. From the battery positive post there is a second 8 gauge wire to a 100 amp circuit breaker on the firewall that supplies the main harness and a small fuse block on the firewall to use for the radiator fans and other high current applications ahead of the front firewall.

Second picture: Inside the passenger compartment I ran the bulk of the main harness on the left side of the car. I replaced the switch panel on the left of the dash with a dash mounted fuse block. The switch panel wasn’t really needed as I have conventional switches for the ignition and lights. All the gauges are wired to a connector under the dash that will plug into the main harness. I replaced the turn signal switch with one more suitably sized for a passenger car. The mass of wires hanging out from under the center dash will connect to the gauge harness and dashboard switches.

Third picture: I split out all the fuel injection wires from the Audi factory harness. They are temporarily hanging over the rear firewall until I can position the fuel injection module inside the car on the firewall. The main harness goes through the top of the rear firewall on the left. There are four locations where items pass through the rear firewall, 1) main harness, 2) shifter cables, 3) brake/clutch lines and 4) starter cable and vacuum hose.

Fourth picture: The fourth picture shows where the starter cable and vacuum line pass through the firewall. You also see the large gauge wire from the starter to the alternator, but the alternator side of the wire is not attached.

All wiring will be covered with split braid for protection and a better appearance. After I finish connecting the interior wiring so there is no risk of a short, I want to try cranking the engine to ensure that the starter, flywheel and clutch all work together. I’m ordering an MS3 Pro for semi-sequential injection and batch fire ignition.