Does anyone have a diagram for a boyer bransden electronic ignition -1977 truimph 750 bonne. twins

Hi,you can get this pinking becouse the air fuel mixture is wrong,
check spark plugs if the plug is black-souty mixture is to rich,
if witer then the mixture is to lean,(wich could couse pinking)
or get a strobe-light and make shore the timeing is write first.
hope this was some help.
hope you get to the bottom of it.

I found that with mine. It would start and run for 10/15 seconds and stop. Leave a couple of minutes and start no problem then stop again. Took whole ignition system to Boyer Bransden and they tested it and the brain box was faulty. Replaced that and bingo. SORTED. Over 40 Years Proven Performance

http://www.carlsalter.com/motorcycle-manuals.asp
Try this link. Free downloads for 100's of bikes. Checked it and the wiring diagram is there.

Fairly sure the tacho on the Africa Twin is driven from 1 of the ignition coils and/or 1 of the CDI units. I would suggest getting a large image of the wiring diagram from the web. Then if you can blow it up even further. That should give you an idea of which wire[s] you need to investigate. I have heard of and witnessed instances where moisture has gotten into connectors and cause all manner of strange problems. Also when checking the wiring make sure the insulation has not been damaged or some part of a connector or wire is not shorting to fame, engine or another electronic component.

Kawasaki.com sells them for around $37.00

hi mate ,,i've got the same problem.<br /> i bought a basket case 550ef with no igniter unit(cdi) fitted,,turns out they're near impossible to find used,or stupidly priced...if i were you i'd go down the boyer bransden route because you don't have to buy the coils or pick ups you can get the igniter module seperately.hope this helps.........john..

Check this forum out you will find somthing there.
http://www.jockeyjournal.com/forum/index.php?

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.
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

yes, just got it put in ,misfiring and hard to start ,kicking back to