Which battery cable should be connected last?
“Positive first, then negative. When disconnecting the cables from the old battery, disconnect the negative first, then the positive. Connect the new battery in the reverse order, positive then negative.”
What is 4 OTT wire?
AWG sizes range from 0000 or 4/0 (thickest) to 40 (thinnest). The term ‘gauge’ references wires that are up to 1 AWG. The term ‘aught’ refers to wires that are 1/0 AWG or larger, with the “/0” part being called aught. For example, 1/0 AWG (0) is called “one aught” and 2/0 AWG (00) is called “two aught.”
Which is the best gauge for speaker wire?
Thicker wire presents less resistance to current flow. Relative thickness of wire gauges, drawn to scale (not actual size). Thick wire (12 or 14 gauge) is recommended for long wire runs, high power applications, and low-impedance speakers (4 or 6 ohms).
What should my ground connection reading be on my car?
Record the reading; you should get something in the neighborhood of 12.6 volts. Next, remove the DMM lead from the positive battery terminal and touch it to the terminal on the disconnected negative battery cable.
What are the signs of a bad ground wire?
Dead Battery. A battery that refuses to take a charge is one sign of a bad ground. The ground is a major part of the battery’s charging system, so assuming that you’re getting proper voltage output from the alternator wire, and the battery isn’t hashed, then you may be looking at a bad ground wire.
When to look for a bad ground connection?
Your DMM should read within about 0.5 volts of your battery with the key in the “Off” position. If you get a voltage reading of anything below 11.5 volts, start looking for a bad ground. Richard Rowe has been writing professionally since 2007, specializing in automotive topics.
Record the reading; you should get something in the neighborhood of 12.6 volts. Next, remove the DMM lead from the positive battery terminal and touch it to the terminal on the disconnected negative battery cable.
Dead Battery. A battery that refuses to take a charge is one sign of a bad ground. The ground is a major part of the battery’s charging system, so assuming that you’re getting proper voltage output from the alternator wire, and the battery isn’t hashed, then you may be looking at a bad ground wire.
Your DMM should read within about 0.5 volts of your battery with the key in the “Off” position. If you get a voltage reading of anything below 11.5 volts, start looking for a bad ground. Richard Rowe has been writing professionally since 2007, specializing in automotive topics.
How can you tell if a battery is fully charged?
The voltage of a battery is a good way to determine the state of charge. Here’s a handy table with the breakdown: Cannot reach higher than 10.5 volts when being charged, then the battery has a dead cell Fully charged (according to the battery charger) but the voltage is 12.4 or less, the battery is sulfated