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--- techtalk:evo:elec01 [2019/12/18 09:42]
ixl2relax [5 Volt Sensor Supply]
+++ techtalk:evo:elec01 [2020/05/11 00:14]
hippysmack [5 Volt Sensor Supply]
@@ Line 132: / Line 132: @@
 Battery condition can be seen as the voltage of the battery after it has been charged. To verify that it is in a 100 percent fully charged condition, charge the battery and disconnect the charger. **Let the battery rest for one to two hours**, then check the voltage level.
-AGM Batteries ((2016 Sportster Owner's Manual))
+{{:techtalk:ref:elec:battery-chargelevel.jpg|}}((2016 Sportster Owner's Manual))((1998 Sportster Service Manual))
-^ Voltage Reading | 12.7 | 12.6 | 12.3 | 12.0 | 11.8 |
-^ Percent Charged | 100% | 75% | 50% | 25% | 0% |
-Older-style Sealed Lead Acid Batteries ((1998 Sportster Service Manual))
-^ Voltage Reading | 13.0 | 12.8 | 12.5 | 12.2 | 12.0 |
-^ Percent Charged | 100% | 75% | 50% | 25% | 0% |
 Be sure your multimeter BLACK Probe is properly grounded to the Battery Negative Post or to the frame.
@@ Line 206: / Line 200: @@
 Over the years, HD has grounded the Sportster electrical systems in a number of ways.
-In the early models (typically, 1993-earlier), **components were grounded to the frame** at a nearby point while power was distributed throughout the system on a minimal number of wires in the wiring harness. There could be as many as a dozen points on the frame used for grounding. The front lights & instruments were grounded thru a connecting strap between the fork risers & the handlebars.
+In the early models (typically, 1993-earlier), **components were grounded to the frame** at a nearby point while power was distributed throughout the system on a minimal number of wires in the wiring harness. There could be as many as a dozen points on the frame used for grounding. The front turn signals (on the handlebars) were grounded thru a connecting strap between the fork riser bolts & the triple tree.
 {{:techtalk:evo:elec:86-93-handlebarground.jpg?500|}}{{:techtalk:evo:elec:86-93-devicegrounds.jpg?250|}}((http://xlforum.net/forums/showthread.php?t=2073777 - Pics from John Harper - Annotated by IXL2Relax))
@@ Line 271: / Line 265: @@
 | **2014-later CANbus Engine Control Module**\\ \\ ECM Connector 2 - Pin 9 is +5v Output (RED/White Wire)\\ ECM Connector 2 - Pin 7 is 5v Sensor Ground (BLACK/White Wire) | **5v power is fed from ECM Connector 2 - Pin 9 to all of these connections:**\\ VSS Connector 65B - Pin A (R/W Wire)\\ -- (VSS uses Powertrain Ground Point (BK/GN Wire)- Not 5v Sensor Ground)\\ JSS - Jiffy Stand Sensor Connector 133B - Pin 1 (R/W Wire)\\ -- Uses Powertrain Ground (BK/GN Wire)\\ ---- (This connector on all models may have an issue due to its location)\\ Passes Thru Engine Harness Connector 145A/B - Pin 8 (R/W Wire) to:\\ TMAP Sensor Connector 80B - Pin 3 (R/W Wire)\\ TPS Sensor Connector 88B - (2014 its on Pin 1 (later years its on Pin B)(R/W Wire))\\ \\ **The following devices are grounded thru the ECM on Connector 2 - Pin 7:**\\ ETS - Engine Temp Sensor - Pin B (B/W to TAN Wire)\\ Front O2S - Oxygen Sensor - (138A/B)Pin 4 - (B/W  to BLACK Wire)\\ Rear O2S - Oxygen Sensor - (137A/B)Pin 4 - (B/W to BLACK Wire)\\ Passes Thru Engine Harness Connector 145A/B - Pin 6 (B/W Wire)\\ TMAP - Temp/Manifold Abs Pressure Sensor - Pin 1 - (B/W Wire)\\ TPS - Throttle Position Sensor - (2014 its on Pin 2 (later years its on Pin A) (B/W Wire))\\ \\ ECM Connector 1 & Connector 2 - Pin 10 are both listed as Sensor Grounds (BK/GN)\\ ---- These are General Grounds - They go to the Powertrain Ground Point |
+====== Tip For Hunting Down Short Circuits ======
+If you are attempting to locate a short circuit, rather than continuing to replace fuses while looking for the
+problem, you can use a test light in place of the fuse at the fuse block. ((HD Tech Tip #48 dated August 1998))  Start removing one load at a time or
+wiggle wires. When the light goes out, examine the wiring on the portion of circuit last disconnected for the
+cause.
 \\

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