I am trying to install a high output alternator on my 1996 Jeep Cherokee. The issue i ran into is that the stock alternator has some sort of voltage regulator on it that connects to the pcm to regulate voltage rather than a 2 prong clip. the new alternator came with a 2 prong clip with 2 wires. I’m not sure how to go about wiring it up or if I need a new voltage regulator or what. I can’t find anything online about it. the alternator is a js alternators 1991-1998 jeep Cherokee L6 4.0L high output alternator. The 320 amp to be exact. I was wondering if anyone had any knowledge on the subject that could be helpful? I will attach some photos of the current alternator and the new one and some wiring for references. Thanks to anyone who can help.
When installing a high-output alternator on your 1996 Jeep Cherokee, it's essential to ensure proper wiring and functionality.
### Key Points to Consider:
1. **Voltage Regulator**:
- The stock alternator likely has an internal voltage regulator that interfaces with the Powertrain Control Module (PCM). Your new alternator may use a different type of voltage regulation, probably requiring a direct connection.
2. **Wiring the New Alternator**:
- Since the new alternator has a 2-prong connector, you will need to identify the purpose of those two wires. Generally:
- One wire is for the "exciter" signal (to turn the alternator on).
- The other usually connects to a voltage sensing terminal.
3. **Adapter Harness**:
- You may need or can create an adapter harness that connects the stock wiring to the new alternator's connector. Ensure you understand the wiring diagram provided with the new alternator to connect the wires correctly.
4. **Consult Documentation**:
- It looks like you received a paper with diagrams. Following those diagrams can be crucial to ensure proper wiring.
5. **Voltage Regulator Option**:
- You may need to bypass the PCM if the new alternator does not require it. This often involves connecting the exciter wire directly to the battery or another source that gives it a signal to function.
6. **Testing After Installation**:
- Once installed, test the voltage output with a multimeter to ensure that the alternator is functioning correctly.
### Steps to Wire:
1. **Disconnect the Battery**: Always disconnect the battery before working with the electrical system.
2. **Remove Old Alternator**: Take out the old alternator, noting how everything is connected.
3. **Connect the New Alternator**:
- Follow the wiring diagram, ensuring the two-prong connector connects to appropriate wires.
4. **Reconnect Battery**: Once everything is in place, reconnect the battery.
5. **Start the Vehicle**: Check for any warning lights and test the electrical accessories.
### Final Thoughts:
If you're unsure about any step in this process, consulting with a professional or a specific Jeep forum for detailed advice is a good idea, especially for custom wiring like this.