How to install a high output Ford 3G alternator into older Fords?
Upgrading the alternator in an older Ford vehicle to a high-output Ford 3G model can provide significant benefits, such as increased electrical capacity to power additional accessories or handle the demands of modern electronics. This step-by-step guide will walk you through the process of installing a Ford 3G alternator in your older Ford car or truck.
Reasons to Upgrade to a Ford 3G Alternator
- Higher Electrical Output: The Ford 3G alternator can produce up to 200 amps of electrical current, significantly more than the original equipment alternator in many older Fords.
- Improved Battery Charging: The higher output of the 3G alternator ensures your battery stays fully charged, even when running multiple accessories or electrical loads.
- Compatibility with Modern Electronics: Older Ford vehicles may struggle to power the increased electrical demands of modern accessories and electronics. The 3G alternator upgrade solves this issue.li>
By upgrading to a Ford 3G alternator, you can future-proof your older Ford and ensure it has the electrical capacity to handle your current and future needs.
Steps to Install a Ford 3G Alternator
- Gather the Necessary Parts: Obtain a Ford 3G alternator, a compatible mounting bracket, and any necessary wiring or hardware. Ensure the alternator is the correct size and amperage for your vehicle.
- Disconnect the Battery: Disconnect the negative (-) battery cable to prevent any electrical shorts during the installation process.
- Remove the Original Alternator: Carefully remove the old alternator, taking note of any wiring connections or mounting hardware that will need to be transferred to the new alternator.
- Install the Ford 3G Alternator: Mount the new 3G alternator using the appropriate bracket and hardware. Connect the wiring, ensuring a secure and proper connection.
- Reconnect the Battery: Reattach the negative battery cable and ensure all connections are tight.
- Test the New Alternator: Start the engine and verify the alternator is charging the battery correctly. Check for any warning lights or issues.
By following these steps, you can successfully install a high-output Ford 3G alternator in your older Ford vehicle, providing increased electrical capacity and improved performance.
What are the downsides of a high output alternator?
Disadvantages Of High-Output Alternators
The most notable disadvantage is the potential for overheating due to increased amp load on the system.
Can I use a different alternator?
Choosing the wrong one won't work with your vehicle in most cases. Size. Of course, physical dimensions make a huge difference in whether an alternator will fit in place of your old one. The mounting bolts need to line up, plus the housing needs to fit in place of the old one without interfering elsewhere.
Do I need to upgrade wiring for a high output alternator?
If you're upgrading your stock alternator to a high output alternator, it is required to upgrade your wiring to a big 3-wiring upgrade kit. A common myth is that you don't need to upgrade your wiring if you aren't running an aftermarket car audio system or other aftermarket products. However, this is not true.
How many amps is a 3G alternator?
Some are rated at 90 or 95 amps, and may be as low as 75 Amp. The alternator in my 91 Escort has the typical 3G design, but has a smaller case, and is only rated at 75 Amps.
What are the three wires on a Ford alternator?
3 Wire Alternator Diagram
There are three key wires in the loop: a positive wire for the battery, a sensing wire for voltage, and an igniting wire. The ignition input wire is linked to the engine.
What do I need for a high output alternator?
Before beginning the installation of a high output alternator, all necessary tools must be obtained. This includes a socket and ratchet set, wrench set, belt tensioner tool, safety gear such as gloves or eyewear, and a memory saver.
What is the alternator specs for Ford 3G?
Stock small case 3G units usually had an output of about 90 amps, the large case puts out about 130 amps. Our 3G series large case alternators start at 130 amps and go up to 250 amps with our Quicktifier Dual and Triple Rectifier System.
How many amp alternator do I need for 2000 watts?
100-150 amps
They /do/ make alternators that can handle 2000 watts with no problem. A typical alternator is 100-150 amps, so 1200 to 1800 watts. Most AC loads are not going to pull the full 2000 watts, so it is likely the whole point is moot.
How many amps is a Ford alternator?
The alternator produces a maximum of 250 amps and will produce a minimum of 160 amps continually at low idle speeds and maximum output above 1800 engine RPM.
