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Wiring diagram for 1980 triumph t140v ignition

Wiring diagram for 1980 triumph t140v lucas ab11 48022 electronic ignition

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Get a Haynes Manual. I work on my own bikes with a Factory Manual, The Haynes or Clymer Manual and a Parts Book. If you are going to do your own work you need these books. Period.

Here are some simple diagrams that give the basic idea of what works for the Typanium Rectifier set up.

Here is a good site for "Home Mechanics".. I love this site.. has some great Triumph stuff and repair info.


Posted on Mar 22, 2010


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2005 Triumph Rocket III how to replace the ignition switch

Hi, Roland for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $0 you can download another one.
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Ngk spark plugs gap chart

NGK Part # 5044 {#1262, 4525, 6824, 7051, B8EV, B8EVX, BR8EIX, BR8EVX} Iridium; Iridium IX
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Sep 05, 2014 | 2001 Triumph Triumph Bonneville

1 Answer

Position of wires to the rectifier on 1973 triumph bonneville T140V

Just to make sure we're on the same page, I'll assume you mean one of these:

If so, let's go to this pic:

(click pic to enlarge a little)

IF you have the terminal marked #1 (not all do), this is an additional ground, to supplement the ground from the mounting bolt (#5).
Numbers 2 & 4 are where the alternator leads plug in. Doesn't matter which, as the voltage from the alternator to the rectifier is AC current.
Number 3 (center terminal) is the "hot" lead (converted to DC voltage), and splits off in two leads, one going to the system, the other going to the Zener Diode, which acts as the voltage regulator.

Now, a few things to be aware of:

When removing or installing the rectifier, ALWAYS use a wrench to hold the "bolt head" (under terminal #1 in the illustration) to keep it from turning while you loosen/tighten the nut.
If you don't do this the "plates" will turn, breaking their internal connection(s).
In that case, you might as well take it off and throw it in the trash, and go buy another one!
Make sure the mounting is contacting clean, bare metal (no paint, rust, etc).
I usually use a piece of Scotch Brite and shine up the mounting area, put a dab of dielectric grease (available at auto parts store) and slip an external tooth lock washer over the bolt threads before inserting it into the hole and tightening with the nut:

The teeth of the lockwasher dig into the mounting surfaces, giving a better electrical connection.

Dec 28, 2012 | Triumph Bonneville Motorcycles

1 Answer

Need a diagram for electronic ignition for a 1980 harley sportster to convert to points

Hi Steve, for a free wiring diagram please visit the website below and good luck. Harley Davidson Wiring Diagrams and Schematics

Btw, I’m available to help over the phone in case u need at

Jan 29, 2012 | Harley Davidson XLH 1000 Sportster...

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Triumph renown 1950 engine will not start when hot,i suspect vapor lock but how to fix?and could there be any other cause,thanks.there is a heat sheild fitted over exhaust manifold

does this vehicle still have the old lucas points or has it been modified to electronic ignition ,also is the vent cap clear in the fuel cap

Aug 08, 2011 | 2006 Triumph Tr 7

2 Answers

The locations of both sets of points in a 1976

It has been a while... but I believe there is a round access cover about 2" in diameter on the right hand side of the bike, forward part of the engine.

That corresponds with the end of the exhaust camshaft. 9_11_2014_6_00_28_pm.jpg
In this photo, it is chrome plated. They are held on by two philips head machine screws.

The points themselves are mounted on two plates. The first plate adjusts both sets of points, the second adjusts the difference in the two sparks.


That said, you might be on a wild goose chase. Most of the older T120s and T140s have already been converted to Boyer electronic ignition systems. MUCH more reliable, and much less maintenance. Smoother, and more precise as well.

Boyer conversion or not, the access plate in in the same place. It just might be a "pointless" ignition.

See these guys - they have very good telephone support - and will have Boyer kits in stock.

British Cycle Supply, item 331 Series Boyer Electronic Ignitions

Jul 30, 2009 | 2001 Triumph Triumph Bonneville

2 Answers

Point location

The points cover should be on the right hand side of the engine, at the end of the exhaust cam shaft.

It is possible that the original plate was replaced by an aftermarket version with cooling fins. That doesn't do much, but it *looks* cooler to some eyes.

Most of these bikes have been refitted with Boyer ignition kits, so under the plate the points are no longer there. They are likely replaced with a sensor and magnetic sensor. That is a MUCH more reliable and maintenance free system.

If you do still have points, there will be two contact sets. The entire disk shaped plate will rotate to adjust timing and a smaller partial plate containing the second set of points can also be adjusted. That gives you control over timing, and difference between cylinders.

Really, I was a stickler for "original" on my bike, and I regret not changing to an electronic Boyer system as soon as they became available. Go for the upgrade. It's well worth it. A good shop can have it done in an afternoon, and you will never have to think twice about ignition or timing again.

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Jul 30, 2009 | 2001 Triumph Triumph Bonneville

1 Answer

1980 Toyota Crown ignition coil wiring

most of the wires wont be connected just the basic's pos/neg ect. if its going into an older model

Aug 04, 2008 | 1983 Toyota Cressida

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