The main advantage is the ability to recharge the battery at idle and low RPMs. In addition, the (60) amp output of this new alternator provides a quick recovery of a low battery as well as being able to create a strong reserve of electrical energy. Since the battery is now being kept fully charged, there is no longer the constant charging/discharging of the battery which greatly increases the life of the battery

Your electrical system is positive ground if the positive (+) battery cable is connected to the engine block or frame, and the negative (-) cable is connected to the battery terminal of the starter, or solenoid. You will need to reverse the polarity of your electrical system in order to take advantage of a modern alternator charging system. Its simple to reverse the polarity—just two easy steps.

First, reverse the battery cables at the battery. Second, reverse the wires on the amp gauge. The one known exception is 1939 and '40 Fords which use a Buss Bar type of amp gauge. This type of gauge will read either polarity with no changes. Your system is now negative ground. If you have any polarity sensitive accessories such as a factory radio or dash clock, it is a good idea to consult a competent radio shop for advice.

Fifth Avenue offers a wide selection of drive pulleys to fit most any application. The cost of the alternator drive pulley is included in the price of the alternator. All pulleys are made of top quality machined steel and carry a lifetime warranty against breakage. Some of the pulley sizes available include (3/8") single groove, (3/8") dual groove, (1/2 - 3/4") single groove, and (1/2") dual groove.

The diameter of the alternator pulley is very important. In order to insure a strong output from the alternator at idle and low rpms, it is important that the alternator pulley be at or close to (2.5") in diameter. Stock generator pulleys are too large in diameter to be used on alternator applications. The increased diameter will reduce the output of the alternator by 25% at idle and low engine rpms.

All of Fifth Avenue's alternators come with the correct diameter and width of drive pulley installed based on your application.

Fifth Avenue offers a wide variety of mounting brackets for their alternators. Some of the more popular mounting bracket kits, include those for 1937 thru 1962 GM cars and trucks. Also, Ford cars and trucks, built between 1932 and 1962. Fifth Avenue also offers alternator pulleys and mounting brackets for commercial and industrial applications such as forklifts, farm tractors, irrigation motors, and vintage firetrucks.

No. The alternator requires only a simple two wire hook-up using the "Batt" wire from the old voltage regulator and the yellow wire provided with the new 6-Volt Alternator. A complete instruction guide is provided with each alternator purchase which explains the mounting and wiring procedures.

The main advantage is the ability to recharge the battery at idle and low RPMs. In addition, the (60) amp output of tFifth Avenue designs and manufactures their own alternators, here in the USA, using only those parts meeting the current ISO 9000 quality control standards. ISO 9000 quality control standards are the same standards required by the new car manufacturers, and are recognized throughout the world.

Yes. Each alternator is manufactured here in the U.S.A. and is guaranteed for a full 24 months from date of purchase. This guarantee includes parts and labor on the alternator. Each alternator is run tested under working load conditions before shipment to ensure you receive a top quality product that out performs its rating.

When modern alternator charging systems were introduced in the 1960's most automobile engines had idle speeds of 1200 rpms or greater, so this became the "cut-in" speed for "modern" alternators. By contrast, vintage engines typically have idle speeds of 800 rpms or less, and some as low as 450 rpms. The alternator you install on your vintage vehicle needs to begin charging at engine idle speed, just as it would for a modern application.

Fifth Avenue's alternators are able to do just that. By using specially designed rotors and stators, Fifth Avenue's alternators are able to develop a strong 30 amp output at idle and low engine rpms, while still providing a strong 60 amp output at highway speeds. The result is an alternator that can provide twice the amperage output when compared to an original generator type charging system.

Also important, Fifth Avenue uses their own design of specially wound "Delta Type" stators. In this advanced stator design, current is allowed to flow in all three stator windings at the same time. The result is a stronger, more reliable output current, at idle and low engine rpms, with less chance of damage from excessive heat. The less expensive, and more common "Y-design" stators allow current flow in only two of the windings at any given time and are less resistant to excessive heat.

In addition to the (60) amp, 6-volt alternators, Fifth Avenue also manufactures a series of 12 volt alternators for those applications requiring an upgrade from 6 volts as well as those applications replacing a 12 volt generator system. Known as the 90 Series Alternators, they have an output rating of (60) amps, (14) volts. Features include a "solid state" internal regulator and a "DA" plug as standard equipment. The "DA" plug allows the vehicle to be started and stopped using the original ignition switch, it also eliminates the need of having to "energize" the alternator.

Like the 6-Volt Alternators, each of the 90 Series Alternators are run tested after assembly, under working load conditions. All 90 Series Alternators are 100% guaranteed for a full two years including parts and labor to the alternator.

Both systems will work equally well with the upgrade to an alternator type charging system. If your goal is to have an original car, that is dependable to drive, that starts good, and will have bright headlights, the 6-volt alternator, is the way to go. If your goal is to add a modern stereo, air conditioning, and related modern conveniences, then an upgrade to a 12-volt electrical system is your best bet.

Yes, to protect your dash gauges from excessive voltage when upgrading to (12) volts, you need a regulated voltage drop. Developed by Fifth Avenue in 1995 a "Runtz" transistorized voltage drop accepts a range of between (8) and (20) volts incoming while providing a constant (6) volts output, regardless of the input voltage.

By contrast, a conventional ceramic type voltage drop is a simple resistor having a specific "ohms" rating. The ceramic type of resistor will typically have a 40 percent error rate meaning the voltage on the output side can vary from (3.6) up to (8.2) volts, depending on the incoming voltage. This will damage your dash gauges and cause inaccurate readings. To protect your gauges order part number 95415G.

The cost is $18.00 each. One "Runtz" is required per electrical gauge

Yes, the drive pulleys and the alternator mounting brackets shown for the 6-Volt Alternator will also fit the 90 Series alternator. A DA Plug is also standard on all of Fifth Avenue's Alternators.

Yes, you can just specify "DA" Plug on the order form. The cost is $18.00 each and they will work on both 6-and 12-Volt applications.

Fifth Avenue will gladly answer any technical questions you may have about the installation and operation of their products. Just call 785-632-3450 (9:00 a.m. to 6:00 p.m. CST weekdays) or you can e-mail technical questions to "Tech Questions" at fifthave@oz-online.net.