Question about Harley Davidson FXD - FXDI Dyna Super Glide Motorcycles

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I am putting points back in my 1983 shovel head. there is only one wire coming from the points. which terminal on the coil does it connect to?

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  • Harley Davidson Master
  • 39,936 Answers

Hi Tim, the points wire goes to the negative side of the coil. Have nice day.

Posted on May 17, 2015

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Posted on Jan 02, 2017

wd4ity
  • 4565 Answers

SOURCE: Re-wired the 1981 FXWG Harley

contact me directly at wd4ity@bellsouth.net I think I have a wiring diagram that I'll send you. Don't forget to remind me of what you need and the year and model bike. I get a lot of requests and I can't remember who needs what.

Steve

Posted on Aug 31, 2011

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I have a 75 iron head wont get spark but has power going to coil


If the condenser has failed, across the points, it will not spark. turn the engine until the points open. Turn on ignition, with a small screwdriver, open the points and there should be a small spark and the plug should also spark. If it doesn't, with a 12volt 5Watt bulb, connect one side to the frame/engine and with the other wire go to the points. When open the bulb should light and go out when closed. If all seems OK, replace the coil as they are notorious to fail when warm. My 1965 Shovel had me going round in circles for a brief while as well. Keep logical about your fault finding.

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1 Answer

77 shovel head plugs carbon fouled


Hi Anonymous, and the usual suspects are:
1. Plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discarged.
6. Damaged wire or loose connections at battery terminals especially the ground cable at BOTH ends, ignition coil, or plug between ignition sensor and module.
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Jan 30, 2013 | Harley Davidson FXR Super Glide...

1 Answer

I have a 1974 harley I can't get it to fire. One port on the coil (bottom) has real slight fire. The top nothing? fxt lowrider


Test the primary side of the coil. Disconnect the small wires from both ends of the coil. Then, use a digital volt ohm meter to test the resistance of the coil. Put the meter's function switch in OHMS, R X 1 scale. Touch one meter probe to each one of the terminals on the ends of the coil. The meter should read between 5-6 ohms of resistance. If it does this, reconnect the white wire to the top terminal of the coil. Take a plain piece of wire and strip about an inch of insulation from each end. Connect one end of this wire to the bottom terminal of the coil. Put both spark plug wires in the coil with a spark plug in each wire. Make sure the plugs are grounded to the engine. Turn the ignition switch on and MOMENTARILY touch the wire you connected to the bottom terminal of the coil to the engine and then take it away from the engine. When you take the wire away from the engine ground, you should see a spark at both plugs. If not, the coil is bad. Have you cleaned and checked the gap on your points? Clean the points using a thin piece of stiff paper like a piece of index card with a bit of alcohol on it. Set the gap on the points to 0.020". Make sure the gray wire from the points is connected to the bottom terminal of the coil.

Good Luck
Steve

Aug 02, 2011 | Harley Davidson FXST Softail Standard...

1 Answer

I have a 1979 xlh sporty took bike apart to paint on re assembly i hooked up coil wires wrong had no spark fixed wires but could i have killed my coil still no spark.


Ok to test the coil, remove all wires from the small terminals on the ends. Use a digital volt ohm meter and put the function switch in OHMS, R X 1. Touch one meter lead to each of the small terminals. Your meter should read between 2-3 ohms as the '79 model had electronic ignition.

To further test the coil, reconnect the two white wires to one of the small terminals. On the other side, make a jumper wire. Connect the jumper wire to the other small terminal. Put the plug wires into the towers and put a set of spark plugs in the wires lying on the heads with a good ground. Now, turn the switch one. The terminals with the white wires on it should be "Hot". MOMENTARILY, ground the jumper to the engine and take it back loose. When you take the wire loose, you should see a spark at the plugs. If you do, the coil is good and your problem lies elsewhere.

Good Luck
Steve

Sep 16, 2010 | 1979 Harley Davidson XLH 1000 Sportster

1 Answer

I need a wiring diagram for the coil and distributor on a 1.8 ea81


Yellow wire goes to the Negative coil terminal, Black/white wire goes to Postive coil terminal. I think this is what your asking?
It is funny you posted a question regarding Subaru Brats, I am currently restoring one at this time. Comment back if you need more help.

Sep 09, 2010 | 1983 Subaru Brat

1 Answer

My 72 sportster is getting power to the coil but no power to the terminal leading to the points. Any advice?


Well, power only comes in from one side of the coil and if the points are closed, your meter will not read voltage on the other side. Make sure the points are open when checking for voltage.

To check the coil's primary circuit. Take all wires loose from the small terminals at either end of the coil. Using a DVOM (digital volt ohm meter), put the meter in OHMS, R times 1 scale. Connect one meter lead to each terminal of the coil, make no difference which one goes where. The meter should read between 5 and 6 ohms of resistance. If it reads "Infinite" the coil is open and if it read "Zero" the coil's primary circuit is shorted.

The easy way to test the coil is put a spark plug in the plug wire and lay it on the head. Make sure it has a good ground. Turn the engine over until the points are closed. Turn on the ignition switch and use something to open the point. Each time you open the points, you should see a spark at the plug. If not, you've probably got a bad coil.

Good Luck
steve

Aug 06, 2010 | 1979 Harley Davidson XLH 1000 Sportster

1 Answer

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