Ammeter will read from a negative amperage when the battery is providing most of the current thereby depleting itself, to a positive amperage if most of the current is coming from the charging system. If the battery is fully charged and there is minimal electrical demand, then the ammeter should read close to zero, but should always be on the positive side of zero. It is normal for the ammeter to read a high positive amperage in order to recharge the battery after starting, but it should taper off in a few minutes. If it continues to read more than 10 or 20 amps even though the lights, wipers and other electrical devices are turned off, you may have a weak battery and should have it checked.Oil -
Measures engine oil pressure in pounds per square inch. Oil pressure is just as important to an engine as blood pressure is to a person. If you run an engine with no oil pressure even for less then a minute, you can easily destroy it. Most cars have an oil lamp that lights when oil pressure is dangerously low. If it comes on while you're driving, stop the vehicle as soon as is safely possible and shut off the engine. Then, check the oil level and add oil as necessary.
Heat -
This gauge measures the temperature of the engine coolant in degrees. It is very important to monitor the temperature gauge to be sure that your engine is not overheating. Note: If the temperature gauge moves all the way to hot, the engine is overheating! Safely pull off the road and turn the engine off and let it cool. An overheating engine can quickly cause serious engine damage!
Fuel -
No explanation necessary
Note: Gauge Restoration Resources
John Wolf & Company
Redline Gauge Works
