I found the following instructions with step by step instructions on removing and repairing the headlight relay.
http://www.saab9000.com/procedures/electrical/headlamp_relay.php
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a relay just plugs in literally
To replace the headlight ballast on a 2003 Saab 9-3, first, disconnect the car battery to ensure safety. Next, remove the headlight assembly by unscrewing the necessary bolts and gently pulling it out. Locate the ballast, disconnect the wiring harness, and unfasten it from the assembly. Install the new ballast by reversing the steps, securing it properly, and reconnecting the battery.
In a 1999 Saab 9-5, the fuel pump relay is located in the engine compartment, specifically in the relay box near the battery. To access it, open the hood and look for the rectangular relay box, usually situated on the driver's side. The fuel pump relay is typically labeled in the diagram found on the cover of the relay box. Always consult the vehicle's manual for precise identification and troubleshooting.
In the 1999 Saab 9-3 Convertible, the relay for the fuel pump is typically located in the engine compartment fuse box. Additionally, other relays related to various electrical functions can be found there as well. For more specific relay information, it's advisable to consult the owner’s manual or a service manual for the vehicle.
To replace a headlight on a 2001 Saab 9-5 wagon, first, open the hood and locate the headlight assembly. Remove the plastic cover or housing by unscrewing any retaining screws or clips. Disconnect the electrical connector from the old bulb, then twist the bulb socket counterclockwise to remove the old bulb. Insert the new bulb, reconnect the electrical connector, and reassemble the headlight housing.
with a screwdriver
== == That is how you change the actual headlight but the question is how to change a fuse.
How do you replace a front indicator bulb in a Saab 93
Pop the hood, In a black box located on the driver side of the engine compartmentnext to the firewall. If yours is like mine its bright orange. Good luck!
How do you replace a key battery on a 2004 Saab 93