wiring

deb · Borekit Bruiser Joined: 07 Mar 2006 Karma :

I am busy with the wiring at the moment and have got to the handle bar switches. My manual has less wiring from the switches than my bike - 2 for the hooter, 2 for the start, 2 for the lights, 3 for the indicators ( that is ok), 4 for the lights - lo, hi, pass +1 other) 2 for the kill switch. Can anyone tell me where they all go to? I have figured some of it out but am not 100% sure about it.

code guru · Brolly Dolly Joined: 25 Jan 2006 Karma :

bike wireing diagrams can be a pain 2 folow, but if u can upload the wireing diagram i could find out for u , most off the wires go 2 the regulator i think, but it depends were its comeing from.

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

My advice is to sit with your wiring diagram and open MS paint on your computer. Draw boxes for all the componants.

Now draw in the wiring using the line tool, in colour, in a way that makes sense to you. Do them one circuit at a time. You will find there is usually a certain logic to the colouring. For example the earths will all be the same colour. Power from the ignition switch will be the same colour. Beam will be white, dip will be yellow etc. etc.

Some of the switches don't work as you would expect. For example, most horns are live all the time with the switch on the earth side of the circuit. The live wire goes into the horn, then out of it, up to the switch and then to earth. Pressing the switch earths the current. I have no idea why they do this, seems counter-intuative.

I'll give you an example with a couple of circuits (not necessarily how it works on your bike) once you start, you can build it up quite easily into a full schematic:
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

deb · Borekit Bruiser Joined: 07 Mar 2006 Karma :

A man who thinks along the same lines as me. HAHAHA. I spent ages colour coding all the various wires on the diagramme. Most of it makes sense but not all. I can download stuff (try anyway) so if you could find one for me, that would be great. I have the owners manual for a Yamaha SR250 G on CD. But any help is more than welcome.

code guru · Brolly Dolly Joined: 25 Jan 2006 Karma :

well if u could upload the wireing diagram and tell us wot u need we will try and find out for u, well i will give it a try

deb · Borekit Bruiser Joined: 07 Mar 2006 Karma :

My bike is a Yamaha SR250 SE Special, made somewhere between 1980 and 1983. My brother thinks that the handlebar controls are not the originals so that may be where the problem is.

code guru · Brolly Dolly Joined: 25 Jan 2006 Karma :

could be, i had a yamaha rs125 97 reg and i have 2 say them bikes r nice 2 ride

deb · Borekit Bruiser Joined: 07 Mar 2006 Karma :

I have only ever seen 1 other Sr here and that was a 125 - very nice, but the design looked so different to mine - longer and lower. I can't wait to get on mine and wobble down the road (I probably will wobble).