Lav 1000 Bosch Pickup Plate cabling

Alex M

Alex M

Junior member
Location
Germany
Good day gents,

I have manged to get a spare ignition Pickup plate for my Laverda 1000. Unfortunately "Mr. previous owner" cut off the wires of the Pickup coils. I still have those really thin cables coming out of the coils (each maybe an inch long). The problem is, they are black and white on both pickups. How can I tell which is the in and the out line for each coil?

I don't want to take my ignition apart to find out, so I was wondering if somebody has a spare pickup plate as well and can tell me how to connect the black and white cables to a DMCII.

Cheers,
Alex
 
Hi Dave,

thanks for the reply but it looks like, I didn't make myself clear enough. The cables marked as white/red, white/red/black, white/black and white are missing on my pickup plate.

On each pickup coil I have one white and one black wire each.

I guess I need to take a picture to make it clearer.

Cheers,
Alex
 
Alex,

Just wire it all up as per diagram, don't worry about the pick-up polarity just yet.  When all is installed, bar the rotor, stick some plugs in your plug caps, ground them, power up the ignition and search for a thin-bladed screwdriver.  With the ignition turned on, place the screwdriver blade across the magnetic poles of one pick-up and pull it off sharply.  You should see a spark at the corresponding plug.  If you see a spark as you APROACH the pick-up, the polarity is incorrect.  In this case simply swap over the corresponding pick-up connections.  Repeat for other pick-up.  Install rotor and strobe/adjust timing, and off you go.

Before you go to all this trouble, might be worth checking the "new" pick-ups if they're OK.  Resistance across the wires should be around 60 Ohms, 55-70 is quite OK.

DO NOT run the bike with incorrectly poled pick-ups, ignition will be advanced by around 15-20?.  It will run, but will eventually come dangerously close to terminal meltdown!

piet
 
Hi Alex, best to follow Piet's advice, but to improve your chances to get it right from the beginning, this picture taken during  my last rewiring of a pickup plate might help:

pickup180.jpg


With pickup plate sitting in alternator housing, center cylinder pickup is in lower position. After the pickups have passed the screwdriver test as described by Piet, take care to put the DMC trigger rotor in the right way around (see DMC manual for correct position).

Regards,
Stefan
 
Thanks for that priceless nugget of wisdom Piet! Having had to diagnose a few non/poor running bevels that have darkened my door, your info will be a big time and ankle saver in the future.
 
Ok gents,

I have followed Piet's and Stefan's instructions - all good now. Thanks once again for your help.

Cheers,
Alex
 
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