otherwise will correct me where I am wrong, but on the FZS1000 there was three electrical parts on the bike that can normally cause the Vdrop I, you and other's have experienced.
1. The connector that connects the alternator to the reg/rec isn't sealed from the elements and on a lot of bikes this gets corroded, this results in a small Vdroop due to resistance caused by the corrosion on the spade connectors.2. The red wire running from the reg/rec to the battery isn't of thick enough guage so again you get a small Vdroop across that small length of wire.
2. Most of the reg/rec's that were fitted the FZS were of average to ok quality. The reg/rec is a cheap shunt based unit, where as new bikes its a mosfet based.
Here is a thread on how to replace the connector and the battery charging wire -
- http://foc-u.co.uk/index.php?topic=4820.0
- and a video on how to change the reg/rec connector - https://youtu.be/sSo2AY6Nm5M
And here is a thread on the reg/reg as the similar unit was fitted to some Triumphs, with the Op recommending the Shindengen SH847 as it give you superior charging and reduced the load on the alternator at the same time -
- https://www.triumphrat.net/threads/charg...e.104504/- https://www.ebay.co.uk/sch/i.html?_from=...R&_sacat=0
1. The connector that connects the alternator to the reg/rec isn't sealed from the elements and on a lot of bikes this gets corroded, this results in a small Vdroop due to resistance caused by the corrosion on the spade connectors.2. The red wire running from the reg/rec to the battery isn't of thick enough guage so again you get a small Vdroop across that small length of wire.
2. Most of the reg/rec's that were fitted the FZS were of average to ok quality. The reg/rec is a cheap shunt based unit, where as new bikes its a mosfet based.
Here is a thread on how to replace the connector and the battery charging wire -
- http://foc-u.co.uk/index.php?topic=4820.0
- and a video on how to change the reg/rec connector - https://youtu.be/sSo2AY6Nm5M
And here is a thread on the reg/reg as the similar unit was fitted to some Triumphs, with the Op recommending the Shindengen SH847 as it give you superior charging and reduced the load on the alternator at the same time -
- https://www.triumphrat.net/threads/charg...e.104504/- https://www.ebay.co.uk/sch/i.html?_from=...R&_sacat=0