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techtalk:evo:elec01 [2022/09/28 05:09] ixl2relax [Testing for Proper Grounds] |
techtalk:evo:elec01 [2023/04/28 05:31] ixl2relax [Battery Voltage Readings] |
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| ====== ELECTRICAL BASICS ====== | ====== ELECTRICAL BASICS ====== | ||
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| + | **Power Distribution** is discussed in the <font 18px>[[techtalk:evo:elec02|Electrical Charging Section]]</font>. | ||
| The Reference Section also has related information: | The Reference Section also has related information: | ||
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| {{:techtalk:evo:elec:BatteryPost-Melted-Arcing-TheDoctor71.jpg?600|}}((http://xlforum.net/forums/showthread.php?t=2071578 - Pic from The Doctor71 - Annotated by IXL2Relax)) {{:techtalk:evo:elec:batterypost-ziptie-sportsterpaul.jpg?280|}}((Pic from SportsterPaul))\\ | {{:techtalk:evo:elec:BatteryPost-Melted-Arcing-TheDoctor71.jpg?600|}}((http://xlforum.net/forums/showthread.php?t=2071578 - Pic from The Doctor71 - Annotated by IXL2Relax)) {{:techtalk:evo:elec:batterypost-ziptie-sportsterpaul.jpg?280|}}((Pic from SportsterPaul))\\ | ||
| - | As you can see in the pictures above, if the connections are not tight even the posts can melt due to high current arcing. In addition to tightening the bolts, you can physically restrain the connectors with a zip tie around the battery post. With proper placement, even the rubber boots can be put back in place. | + | As you can see in the pictures above, if the connections are not tight even the posts can melt due to high current arcing. The operational vibrations often loosen bolts of all sorts on the bike, including the battery cables. In addition to tightening the bolts, you can physically restrain the connectors with a zip tie around the battery post. With proper placement, even the rubber boots can be put back in place. |
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| ===== Battery Voltage Readings ===== | ===== Battery Voltage Readings ===== | ||
| - | From the XLForum.net ((sportsterdoc of the XLFOUM http://xlforum.net/forums/showthread.php?t=1784651 with slight modifications)) | + | From the XLForum.net ((from sportsterdoc of the XLFOUM http://xlforum.net/forums/showthread.php?t=1784651 with slight modifications)) |
| Whenever there is a problem that may even remotely be electrical, it is important to know the quality of power with which you are operating. This is why you should have a volt-ohm meter (DVM/Multimeter) and take voltage readings, as described below, as part of your initial diagnostics. | Whenever there is a problem that may even remotely be electrical, it is important to know the quality of power with which you are operating. This is why you should have a volt-ohm meter (DVM/Multimeter) and take voltage readings, as described below, as part of your initial diagnostics. | ||
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| Now measure a **REFERENCE VOLTAGE**. Place the black lead on the negative battery terminal to take an initial voltage reading of the battery itself. This voltage should be close to 12.8 DC volts. Whatever your voltage reading, directly on the battery, will be called the **REFERENCE VOLTAGE**. | Now measure a **REFERENCE VOLTAGE**. Place the black lead on the negative battery terminal to take an initial voltage reading of the battery itself. This voltage should be close to 12.8 DC volts. Whatever your voltage reading, directly on the battery, will be called the **REFERENCE VOLTAGE**. | ||
| - | When checking the voltage between the positive terminal of the battery and ANY GROUND POINT on the bike, you should have a voltage reading very close to the Reference Voltage (like 12.8v above). Every single ground point on the entire bike should measure within .3v of this reading. | + | When checking the voltage between the positive terminal of the battery and ANY GROUND POINT on the bike, you should have a voltage reading very close to the Reference Voltage (like 12.8v above). Every single ground point on the entire bike should measure within .3v of this reading (~2%). |
| So, if you take the black lead to the other end of the negative battery cable, on the powertrain ground or engine, it should measure near the Reference Voltage. If you take the black lead to the ground pin on the headlight connector, it should measure near the Reference Voltage. If you take the black lead to the ground pin in the taillight connector, it should measure near the Reference Voltage. If you take the black lead to the cylinder heads (next to the spark plugs), the meter should read near the Reference Voltage. | So, if you take the black lead to the other end of the negative battery cable, on the powertrain ground or engine, it should measure near the Reference Voltage. If you take the black lead to the ground pin on the headlight connector, it should measure near the Reference Voltage. If you take the black lead to the ground pin in the taillight connector, it should measure near the Reference Voltage. If you take the black lead to the cylinder heads (next to the spark plugs), the meter should read near the Reference Voltage. | ||
