1991 dodge spirit the car will not turn over no radio wipers signals when key is turned heater blower works but idiot lights do come on either replaced ignitionwhat now?

Since the heater blower works but nothing else electrical (including the idiot lights) happens when you turn the key, the problem is almost certainly a major power issue, not directly related to the ignition switch (though you did the right thing replacing that first!). Here's a troubleshooting path:

1. Battery: This is the most likely culprit. Even if it *looks* okay, it could be completely dead or have a severely degraded internal connection.

* Test the battery voltage: Use a multimeter to check the voltage at the battery terminals. It should read around 12.6V when the car is off. If it's significantly lower, the battery needs charging or replacing.

* Test the battery for cranking amps: A multimeter can test cranking amps, or better yet, take it to an auto parts store and have them load test it. A weak battery won't crank even if it shows some voltage.

2. Battery Cables: Corrosion or loose connections at the battery terminals (positive and negative) can prevent current flow.

* Inspect the cables: Look for corrosion, looseness, or damage. Clean the terminals thoroughly with a wire brush and baking soda and water. Tighten the connections.

3. Alternator: While it seems unlikely given the blower motor works, a completely failed alternator *could* be preventing enough power for the ignition system, especially if the battery is already weak. If the battery tests good, consider testing the alternator output.

4. Fuses and Relays: Though you mention idiot lights aren't coming on, there might be a blown fuse or a faulty relay in the main power circuit that controls the ignition system and other accessories. Check your car's fuse box and relay box for any blown fuses (look for broken filaments) or relays that are stuck. Consult your owner's manual for the location and function of each fuse and relay. Pay close attention to any fuses related to the ignition system or the main power feed.

5. Ignition Switch Wiring (again): While you replaced the ignition switch, double-check all the wiring connections *to* the switch. A bad connection after the switch could mimic the problem you had before.

6. Neutral Safety Switch (Automatic Transmission): If your Dodge Spirit has an automatic transmission, the neutral safety switch prevents the engine from starting unless the gear selector is in Park or Neutral. A faulty switch can prevent the engine from turning over.

7. Starter Relay or Starter Motor: If all else above fails, focus on the starter system. A bad starter relay or the starter motor itself could be the issue. This requires more advanced testing or replacement of the parts.

Important Note: Working on car electrical systems can be dangerous. If you're not comfortable with automotive electrical work, take your car to a qualified mechanic. Incorrectly diagnosing and working on the electrical system can cause further damage.