Old bike help.

Hi,

I was given a DR125 of a 1988 vintage last year and I have been
spending a bit of time doing it up and making good.

I got a little carried away when doing it and stripped the bike down
completly, engine out and everything.

I have now been spending some time putting the thing back together,
but I have a question about the electrics. I have reconnected the
ignition and the magneto and also the "blackbox" but unfortunalty when
I kick it over I dont get a spark. The lights are not fitted and there
is no battery (but that doesnt matter, it started without on before).

Can anyone advose on where I need to be checking to see if there is a
fault? I have a wiring diagram, and luckily all the loom is colour
coded, but before I go too far with it, I need to make sure itll fire.

The frame has been resprayed, so there is a chance the earth wire may
not be getting a good contact, will that matter too much?

 

I have cross posted this to ukrmc for you, there are all sorts of sad
old gits over there who can help with this ancient technology sort of
thing.

 

Earths always matter; they must all be 100% good. Poor earthing is
the cause of most electrical faults with motor vehicles IME. Get the
earths sound (scrape back to bright metal on both parts of the
connection, protect from future corrosion with grease/vaseline/
whatever, remake good and tight) and then start your fault-finding.

HTH

DaveP

 

steve auvache wrote

I might be a git and an old one but sad I am not.
Anyhow 1988 is positively brand new in my eyes so I think this thread
should be re-cross-posted back to ukrm, where lurk hoards of youthful
and pimply-chinned but wise and experienced 125 fanatics.

 

You what? A 1988 bike is depressingly avant-garde for the ukrmc
beardies.

 

I'd agree entirely except for the order of your last two points. I'd
secure the earth first, and then smear with vaseline. I fear doing it
your way would inhibit contact a little.

 

You're right, of course. I do it both ways, depending on what's close
to hand at the time, and it doesn't seem to make a lot of difference -
the cleanliness of the contact areas and the firmness of the
connection seem to matter more. But strictly speaking, the protection
should go on afterwards.

Of course, we could always start a new debate: Vaseline - before or
after?

DaveP

 

Shave and a haircut - ting ting

DaveP

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, o0-0o

<WC Mode>

Instead of.

</WCM>

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Dont know if it helps but I had a gn125 (same engine and I *guess*
wiring loom as the dr), that stopped working after I replaced the
complete headlight.

Turns out that when I replaced the headlight the two big multi
connectors that live inside the headlight shell can be wrongly plugged
into each other, once swapped over the bike fired back into life. A
stupid mistake made by rushing and working in poor light!

HTH

 

^^^^^^^^^
Or, if you're American, "two bits!"

#Pom-tiddly-om-tom, pom-pom.

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KotPT -- "for stupidity above and beyond the call of duty".

 

Ah yes. The ting ting comes after "Hold very tight please", doesn't it?