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How do you get wiring harness dual fire installation to the plugs

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6ya6ya

6ya staff

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Hi there,
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Posted on Jan 02, 2017

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Anonymous

  • 29 Answers

SOURCE: wiring harness 1974 sportster???

I am assuming your bike is stock, or close to it. In 1974, all h-d's used a battery coil ignition with wasted spark. Battery positive flows from the ignition switch to the coil, through the coil primary winding to the points, then open or shorted to negative (through the chassis) depending on the points being open or closed. When the engine is turning over, this is what happens: The small cam that operates the points has the points in the closed position, so battery current is flowing through the coil primary, through the closed points to negative. This causes the primary winding inside the coil to set up a magnetic field. When the cam starts to open the points, the current tries to bridge the gap. If we let this happen, the big arc between the point surfaces would burn up in a hurry, and the plugs would not fire for the following reason: The ignition coil is a transformer. It has a primary and secondary winding.The secondary winding has many more turns of wire than the primary. When the secondary winding "cuts" magnetic lines of force a larger voltage is induced in the secondary. In the case on your sporty, we are boosting 12 volts to over 10,000 volts. This depends on 2 things: The number of lines of force and the speed they are cut. So, when the points just start to open, the condenser absorbes the current until the points are open enough to prevent arcing. Then the current flow through the primary winding stops. The magnetic field quickly collapses, cutting through the secondary windings that are connected to the spark plugs. The resulting high voltage (pressure) Jumps the gap on both plugs and lights the fire. One of the cylinders is on the exhaust stroke so that spark is wasted. So: ignition on : 12v at coil positive. With points closed, 0 volts at coil negative. If you read voltage here, the points are dirty or open or the wire from the coil to the points is open. Points open: 12 volts at coil negative. To check for spark, you don't have to crank the engine. Just manually opening the points should fire the plugs. After you get the plugs firing, post again and I will tell you how to razor tune this thing. It should start instantly with a perfect idle. Hope this is clear.

Posted on Jan 01, 2009

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Anonymous

  • 5 Answers

SOURCE: Wire harness for my Dual?

Try autotoys.com

Posted on Jul 09, 2009

Anonymous

SOURCE: wiring harness burnt up need a new one

Try the Dealer,a Salvage Yard for a similar vehicle. Then assuming you have enough left you could make one or at least I could by copying the burnt remains. Still need scrap connector if they melted. You may find plugs as you said from many GM veh of different years. Also check the ads in Street Rod ,Rod & Custom for companies that will make you what you need. Hopefully you can find a way without parting with the cash Now the real question, did you take out any electrical or electronics during the melting process. Been there 40 years ago on a 65 Corvette I bought new.

Posted on Sep 28, 2009

Tom Chichester

  • 54386 Answers

SOURCE: Radio won't play

There may be differences between the color coding of the adapter wires and the color coding of the vehicle. Check to determine whether the wires were functionally matched, not just matched by color. Check for missing or poor connections

Posted on May 07, 2013

prismen

  • 1 Answer

SOURCE: Dual XDVD8180 Wiring Harness

manual de instalacion de xdvd8180

Posted on Jul 07, 2013

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Installing a Dual XDVD276 radio in a 2005 Chevy Impala without the factory end of the wiring harness.


You will need to splice the wires as it will be hard to find the right connector to attach to the harness wires. Use the wiring diagram for the car (get it at Alldatadiy.com) and the one that came with the Dual unit to figure out which wires connect to each other.

Nov 30, 2017 | 2005 Chevrolet Impala

1 Answer

Cant find a harness to plug into the back of a Dual XD250 RADIO.


You won't ever. They make a universal harness. You should have a wire harness for your new radio only that was included with the radio. It should plug into the new radio and the other end will just be wires. Then you will need to go to a parts store, ( AutoZone, Oreilly's, Advance Auto, Etc) and but a radio wire harness for your truck. It will have a connector or two that plug into the harness that plugs into the back of your stock radio and the other end will be just wires. you will then connect the two harnesses together by matching wire color. ( EG: Purple to Purple, Gray with black stripe to Gray with black stripe, etc)

If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

Dec 11, 2013 | Car Audio & Video

1 Answer

Radio won't play


There may be differences between the color coding of the adapter wires and the color coding of the vehicle. Check to determine whether the wires were functionally matched, not just matched by color. Check for missing or poor connections

May 07, 2013 | Dual Electronics XD1222 Car USB Player

1 Answer

Installing a jvc cd player into a 99 crown vic


the best thing to do is not to cut factory wires and buy a wire harness from walmart or miejer and the wires will be color coted match up and tape them up them plug the two harness's together that is the best way to wire up a aftermarket radio

Sep 24, 2012 | JVC USB/CD Receiver with Dual AUX Input...

1 Answer

Install dual xd1222 into a 1993 dodge intrepid


The best way is to get a stereo installation kit designed for your car. It will have the surround for the new stereo to fit where the stock stereo fit. Also, it comes with a wiring harness that you connect the new stereo to then it plugs in to the stock radio plug. Most local automotive stereo stores should carry them.

May 12, 2010 | Car Audio & Video

1 Answer

I have a 1990 fxr with a single fire ignition, cam and s&s carb. I am not getting the rear cylinder to fire. I just cahnged the coil but no change. I have compression out the exhaust pipe for the rear...


With a single fire ignition, you cannot swap the wires. A dual fire ignition, yes, but not a single fire. You need two things to get the cylinders to fire, spark and compression. Take the plugs out of both cylinders. Run a compression test on the rear cylinder. You need at least 100 PSI to get the cylinder to fire like it should.

Next, put your plugs in the wires, (they should already be in the wiresand grounded) and spin the engine over. Watch for the plugs to spark,especially the rear plug. If you have spark and compression it should run on the rear cylinder. If it still doesn't run, either something is way wrong with the ignition or a very bad air leak on the intake.

If you don't have spark at the rear plug, you need to check the coil. A single fire coil is different from a dual fire coil. The primary wiring is different as well. If you've got the primary wired incorrectly, you won't get spark at the rear plug. Go to the website of the manufacturer of your ignition system. Most of them have downloadable installation instructions. Check your primary wiring.

Oct 02, 2009 | Harley Davidson FXDL Dyna Low Rider...

1 Answer

Car audio wiring diagram for 1998 volvo s-70


CLICK HERE for your vehicles full service manual. If you are cutting wires.
Be warned your vehicle has a factory amplifier installed, and needs to be bypassed to hear the speakers if you are just wiring behind the dash.
Metra makes a harness you install on the aftermarket radio, then simply plug into the vehicle's harness.
All the wires are labeled for easy installation.

70-9220 is the metra part number. Click on the number to see an eBay auction.


Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Apr 09, 2009 | 1998 Volvo S70

2 Answers

Need a new wiring harness for my Dual XDMR7710


Look in your local phone book yellow pages under stereos for a local (not big name) stereo installation store (there will be one) and go there.....you will thank me!

jack
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Feb 22, 2009 | Dual XDMR7710 CD Player

1 Answer

Dual-xd7500


you can buy the plug from the company.it like $30.00 plus shipping their number is 1-866-626-7863

Jun 19, 2008 | Dual XD-7500 CD Player

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