The voltmeter gauge monitors the contingency of the battery and the alternator.5. Attach the voltmeter negative to a good ground and probe the wires at the connector. When a wire is found that is hot (has power) with the key off, hold the probe there and turn the key on. By watching the voltmeter at the equivalent clock the starter is busy, you can examine whether the voltage drops to 10 volts or less. Provided so, it has a damaging cell and needs to be replaced before it causes problems. Whether the voltmeter alone shows sorrounding 12 volts or less when the engine is running the alternator is pathetic and not charging and the engine is running strictly on the battery. Whether the voltmeter shows a aerial 16 volts or higher, the regulator in the alternator is evil and Testament burn up the lights and could maybe burn the wiring.
Instructions
1. Treasure a spot usually--under the dash--that the voltmeter can be mounted. Mount the voltmeter with the screws if. On the back of the voltmeter, there are two connections. Stare at them closely--one side is trustworthy and the other annulling. They must be hooked up that pathway or the voltmeter Testament drudge backwards indicating a discharge when truly it is charging.
2. Manipulate 16-gauge wire for the hookup provided the wire was not if with the voltmeter apparatus.
3. Remove the backside of the sprint to cut access to the harness. The harness can be seen future out of the steering column and going into a rectangular connector close to the column--usually to the left side. Probe the connector for a wire that has power with the key off and does not drop to 0 when the engine is started. Remember that the large 10-gauge yellow wire is the starter and will not have any power except when the starter is engaged. Never mess with a yellow wire with a bold black stripe around it. Call it the yellow jacket wire because this is the air bag wiring.
4. Look for an accessory wire. Usually, the brown wire is the accessory wire and the green or blue wire will be the main power to the ignition. Any of these will work, however every manufacturer has its own colors for the different circuits. It is perfectly safe to test these circuits.
It Testament parade the voltage the alternator is putting away to charge the battery. Watching the voltmeter Testament declare provided the battery is starting to potency dangerous. A battery Testament lay elsewhere over 12 volts much with one or and pathetic cells, on the contrary the amperage Testament decline dramatically. Amperage is what is needed to begin the engine. Keep watching the meter. As long as the power is still there when the key is turned on, it is a good circuit to use for the voltmeter. Turn the key off and cut the wire about 4 inches up from the connector (the cut will be between the connector and the steering column). Attach the wire coming out of the connector to the positive terminal of the voltmeter and the end going to the steering column to the negative side.
