This photo shows the EWP partially installed. The intake manifold and alternator are back in place. The two heater hoses are not yet installed.

Step 11. Wiring the EWP Pump.

The EWP pump comes with a wiring harness and relay to wire the pump for continuous operation. Even if you intend to use the controller unit, it is recommended to connect the pump to run continuously first in order to test the system and work out any bugs. The EWP relay unit can be fitted to the stock Saab 99 fusebox as seen in the photo using an existing screw (arrow).

This location is well-suited as some wiring must be tapped into the adjacent fusebox and battery. The instructions included with the EWP detail how to connect the wiring. The switched ignition lead can be tapped into the wipers fuse in the fusebox. The continuous current lead can be lead through the stock harness and connected directly to the battery positive terminal.

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