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This guide overviews voltage reducer installation on 48V Yamaha golf cars.
Guide illustrates using a 48V G19 model Yamaha golf car. Remember Yamaha G19
model golf cars use six 8V batteries in series. Guide is for economy voltage
reducers that use two batteries in series: 16V of input reduced to 12V output.
12 volt accessories cannot use one 8V battery its not enough, and two or more 8V
batteries in series is way too much. Yes this is a very complex subject and
does require some prior experience in 12VDC systems.
16V to 12V voltage reducers are used for twelve volt accessories such as lights, horn and power port. A 12V power port can be used to operate a small fan or cell phone charger. 16V to 12V voltage reducers are the most economical way to obtain 12V power in a 48V system; however, they do have one limitation. Economy reducers are not suitable for radios. The simple explanation is 12V radios are very sensitive to voltage drops. Economy reducers do not provide constant twelve volts needed by radios. Simply put do not put one of these reducers in your golf car if you ever intend to install a radio or MP3/CD player.
Economy reducer looks like the following
16V to 12V voltage reducers are used for twelve volt accessories such as lights, horn and power port. A 12V power port can be used to operate a small fan or cell phone charger. 16V to 12V voltage reducers are the most economical way to obtain 12V power in a 48V system; however, they do have one limitation. Economy reducers are not suitable for radios. The simple explanation is 12V radios are very sensitive to voltage drops. Economy reducers do not provide constant twelve volts needed by radios. Simply put do not put one of these reducers in your golf car if you ever intend to install a radio or MP3/CD player.
Economy reducer looks like the following
Lift up and remove the seat cushion. Pictured
below as viewed from the front of a G19 model Yamaha golf car.
Batteries are best viewed as an illustration.
Illustrated are batteries numbered one through six. Battery numbers one and two
are used for the economy voltage reducers.
Use the two previous illustrations. Power flows from hot to ground. Illustrated with the letter A positive terminal on battery number 2 in is your input power. Loop terminal on the economy voltage reducer A attaches to the positive terminal A on battery number 2. Economy voltage reducer drops the voltage from 16V down to 12V. Output side of the voltage reducer has two female spade terminals. If you are only using lights use electrical tape to mask off the unused connector. One connector remaining you now have a hot 12V power supply. Power supply attaches to the hot side of your accessory. Ground side of your accessory must attach to the negative terminal of battery number 1.
Remember all of your batteries in series makes
48V. So from (terminal A to terminal C) the positive terminal on battery number
one to the negative terminal of battery number six makes 48V. Do not connect an
economy reducer to these terminals. This reducer has a low variable input range
16V to 18V. Connect reducer to batteries one and two. Terminal A on battery
number one is the voltage reducer input. 16V power flows into the reducer. In
this instance it takes 16V in and puts out 12V. 12V power goes to your
accessory such as lights. Accessory must be grounded to terminal B on battery
number two. Do not frame ground your lights or any other accessory on a golf
car. If you do not know what frame grounding is that a good thing. So forget
about frame grounding and move on. All accessories must be grounded back to the
battery power supply pack.
SAFETY FIRST - one battery
interconnect cable must be disconnected on one terminal before installing
reducer. Battery circuit must be broken before installing reducer.
Use the two previous illustrations. Power flows from hot to ground. Illustrated with the letter A positive terminal on battery number 2 in is your input power. Loop terminal on the economy voltage reducer A attaches to the positive terminal A on battery number 2. Economy voltage reducer drops the voltage from 16V down to 12V. Output side of the voltage reducer has two female spade terminals. If you are only using lights use electrical tape to mask off the unused connector. One connector remaining you now have a hot 12V power supply. Power supply attaches to the hot side of your accessory. Ground side of your accessory must attach to the negative terminal of battery number 1.
This guide is very general for 12V accessories
used on 48V electric Club Car golf cars. As time permits more product specific
guides will be written. This guide is the base of information needed to install
lights, horn or power port. In the future look for the following guides. As
time permits these will become clickable links to product specific
guides.
Future related 12VDC guides topics to be available will include:
Future related 12VDC guides topics to be available will include:
- how to install a horn on your golf car
- how to install a power port on your golf car
- how to install a turn signal on your golf car
- how to install a warning strobe on your golf car
- how to install a chrome head lights and tail light kit on your Club Car golf
car
- how to install head lights and tail lights on your Club Car golf
car
- how to install head lights and tail lights on your Yamaha G2 G9 golf
car
- how to install head lights and tail lights on your Yamaha G14 G16 golf car
- how to install head lights and tail lights on your Yamaha G19 G21 golf car
- how to install head lights and tail lights on your EZ-GO golf car
- how to install universal head lights and tail lights
Guide created: 03/31/08
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