To find them, you'll need to:
1. Consult a wiring diagram: A factory service manual (FSM) for your specific 1994 Astro van is your best bet. This will show you the exact location of all fusible links related to the ignition system (starter, ignition switch, etc.). You can sometimes find these diagrams online through forums or automotive repair sites, but a proper FSM is more reliable.
2. Look near the starter: Fusible links protecting the high-current circuits to the starter motor are common. They're usually thick wires with a thin fusible link section incorporated into them. Look closely at the wires connected to the starter solenoid.
3. Check near the ignition switch: There might be fusible links related to the ignition switch itself, within the steering column area. This area is more difficult to access and requires potentially disassembling parts of the steering column. Caution: Working in the steering column area can be dangerous if not done correctly; only attempt this if you're experienced in automotive repair.
4. Inspect the main power feed: Trace the main power wire from the battery to the ignition system. There could be a fusible link somewhere along that route.
Important Considerations:
* Visual Inspection: Fusible links that have blown will often show signs of melting or breakage. Look for any discoloration or damage to the wires.
* Safety First: Always disconnect the negative battery terminal before working on any electrical components in your vehicle.
* Professional Help: If you're not comfortable working with automotive electrical systems, it's best to take your Astro to a qualified mechanic. Improperly diagnosing or replacing fusible links can cause further damage.
Finding these fusible links requires patience and a methodical approach. Without a wiring diagram, it will be much more difficult, and potentially damaging if you start cutting wires. Get the FSM or take it to a pro.
