Fifth Avenue's 6 Volt Alternator Has Proven Reliability

Fifth Avenue Antique Auto Parts located in Clay Center, Kansas originally introduced their 6 volt alternator in 1987. Since that time it has proven to be reliable in a number of different applications, including the Great American Race. Fifth Avenue's 6 volt alternator has an output of (60) amps, (7.5) volts, which is 60% greater than the original equipment style generator systems. In addition, the alternator has a solid state regulator built inside of the alternator. Owners of this new 6-Volt Alternator report easier starting, brighter headlights, and the end of dead batteries. We had some questions about this new 6-Volt Alternator so we sent our ace automotive reporter to, "get the facts."

So what's the big advantage of this new 6-Volt Alternator over a generator system?

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.

What if my vehicle system is positive ground?

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.

What about the width of the drive
belt pulleys?

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.