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OK guys there have been a lot of postings about this problem, and a few good fixes. They all involve some fiddling with wiring, a topic that many are not comfortable doing. The cause is known to those of us who have posted fixes, the trouble has been finding a way for the home DIY Guzzi guy to make his bike reliable.I rarely feel that adding parts to a system is the best way to make it more reliable, but in this case it is.MPH has sourced the connectors needed to make a plug and play voltage supply relay kit available.Installation is as simple as can be , unplug your starter relay, plug in the harness, attach the removed relay to the harness, zip tie the OE removed relay to the supplied relay, and connect the 2 eyelets to the battery. We are using the well known Bosch relay and a Mini ATC fuse holder . In the rare event of a failure of any part of this system, you can unplug it all and be stock again in seconds.
After some peer review I have modified the part to eliminate the relay. I put it there because of the low Kl.15 voltage I measured on all the bikes. I have seen as much as a 6V drop on this circuit. Maybe I am over thinking it a bit. I hate voltage drops on anything. It seems that Wayne's fixes have not seen any other effects of that low voltage, and this new set up simply addresses the low voltage to the start relay and not supplementing the whole bikes Kl 15 , ignition on circuit. This is much simpler to make and uses less parts, so we can offer it for less $$ . its gets you the same result of a reliable starter operation, but wont have any effect on anything else.
Quote from: mphcycles on August 19, 2011, 11:49:23 AM After some peer review I have modified the part to eliminate the relay. I put it there because of the low Kl.15 voltage I measured on all the bikes. I have seen as much as a 6V drop on this circuit. Maybe I am over thinking it a bit. I hate voltage drops on anything. It seems that Wayne's fixes have not seen any other effects of that low voltage, and this new set up simply addresses the low voltage to the start relay and not supplementing the whole bikes Kl 15 , ignition on circuit. This is much simpler to make and uses less parts, so we can offer it for less $$ . its gets you the same result of a reliable starter operation, but wont have any effect on anything else. So this is more like the current solution floated around on the forums, yes? (other than the yellow wire cutting/splicing - replaced with the removable harness)
Yes Dan we have had Griso's do it too. The CARC bikes and the B 750 all use the same setup on the start relay