Wanted: Electrical buff!

[Noel]

I've got a slight problem, whilst installing an alarm I dropped a testicle and shorted a wire to the chasis, the wire is green with a red trace. I know it's something to do with the display on the left as it went blank at the point it touched, now there is nothing no back light to it or reading, the wire is located in the right hand multi plug under the tank, pin #2, I have checked the fuses in the box under the seat and all seem ok, is there any other fuses? I have looked at the schematic but don't understand it too well, any help appreciated even if it's a spanner man that can fix it (cash waiting)
Many thanks in advance
Noel

 

[Tarka]

When you say the fuses 'all seem to be ok',is that just by a visual check ?

I`ve known blade fuses to look perfectly ok even from the side where you can see the curl of the fuse 'filament' and yet they`ve blown.

You need to check them with a continuity tester to prove them.....or go individually from fuse holder to fuse holder with a known good one.

 

[Rob Farmer]

Noel,

The RID is on the same fuse as the Power socket; Fuse 3.

The Green wire with the red trace is the switched wire from your kill switch it's fed via the ignition switch from Fuse 5. It enters the ignition switch as a 1.5mm red wire and comes from from the ignition switch as a 1,5 mm green wire. At the right multiplug it's a 1mm green wire. This would be a good place to test for 12VDC with the ignition on. It then goes to the kill switch and out from there as the green and red you mentioned. From the kill switch it goes through the side stand switch and onto to the RID, fuel pump relay and some other gear.

It sounds like it should have definatly blown a fuse (favourites fuse 5).

 

[BTBR]

Noel,

The RID is on the same fuse as the Power socket; Fuse 3.

The Green wire with the red trace is the switched wire from your kill switch it's fed via the ignition switch from Fuse 5. It enters the ignition switch as a 1.5mm red wire and comes from from the ignition switch as a 1,5 mm green wire. At the right multiplug it's a 1mm green wire. This would be a good place to test for 12VDC with the ignition on. It then goes to the kill switch and out from there as the green and red you mentioned. From the kill switch it goes through the side stand switch and onto to the RID, fuel pump relay and some other gear.

It sounds like it should have definatly blown a fuse (favourites fuse 5).

Show off................

Just check fuse number 5 would have sufficed.

BTBR

 

[Rob Farmer]

Not if he wants to install his alarm it wouldn't

 

[enabb]

 

[Noel]

Thanks Rob, Tarka, BTRB will nip out in a bit and have a definate look and probe with my meter, I did check the fuses in the heat of the moment with the meter. I knew it was something to do with immobilisation as this is the wire that the Meta instructions say to cut for the alarm. Here's hoping it's just a fuse!

 

[Noel]

Checked all fuses with meter and all OK not had chance to check to see if juice is at the smaller green wire but I will get round to it!

 

[Greg Masters]

What neither Michael Faraday nor Humphry Davy (above) mentioned in their respective dissertations on the BMW wiring ethic was to:

.....disconnect the fecking battery before you go flashing wires around!



Greg

 

[Bronco Billy]

That meter`s getting some use then mate....

 

[Rob Farmer]

What neither Michael Faraday nor Humphry Davy (above) mentioned in their respective dissertations on the BMW wiring ethic was to:

.....disconnect the fecking battery before you go flashing wires around!



Greg

Smart arse

 

[Cestria]

What neither Michael Faraday nor Humphry Davy (above) mentioned in their respective dissertations on the BMW wiring ethic was to:

.....disconnect the fecking battery before you go flashing wires around!



Greg

Good advice that most people should heed. However sometimes you need to work on stuff live so heres another tip which may save you grief.
Disconnect one of the leads from the battery ( my preferance is the posative ) and get a thin single stand of copper wire from a multicore cable. Use this single strand to connect the lead to the terminal you just removed it from - you kind of wrap it around each and let the lead hang down the side of the battery held only by the single strand - you may have to 'gerry rig' something to keep it clear from shorting and getting it to hang properly. Thats your emergency fuse should you touch something to ground or short something out while testing / playing. I hope I've explained that fully but If you dont understand what I've just said dont try it!!

 

[Noel]

My night in Shining Armour

Thanks to Rob for diagnosing my problem! found to be damaged kill switch easy when you know how, thanks again Rob.

 

[Rob Farmer]

No Worries It took longer to take the piss out of Bronco's meter

 

[Noel]

Shuuush, he only lent it me to tune the bike up, I will have to pay him extra now as it's used for something it wasn't intended for!
It's all back together now and running, managed to get switch apart (another screw under sticker) removed kill switch and soldered wires together inside the housing, you would never know! even found the little spring that came out of the housing, jobs a good'un.