My original post was over 3 years ago and as you can see things have changed.
I know lots of people who claim that they haven’t had any problems with the RR51’s, I was one of them but have had problems since then…
So you could be one of the lucky ones.
Just forget/bypass the original wiring and remove the old reg/rec, mount the RR51 and fit the red to the positive, green to the negative, the 2 yellows to the alternator, then run a wire from the positive side of the battery to the main fuse…
You should then have a working charging system, that has a seperate sub-loom that plugs into the main loom via the fuse box*.
The white wire is for the charging light on the 748,851/888/916’s etc and when plugged into the looms on these bikes it works as it should, only lighting up the gen’ waring light when the charging systems isn’t working properly, as I said before I don’t know wether it’ll work on the old Bevel loom as I run a much simplified self-made loom on my 900.
IIRC the ‘Gen’ light on the 900 stays on all the time whatever the charging systems doing, it doesn’t come on then go out when the systems charging, or only light when the systems failing.
But I do know that if the metal ‘Gen’ light bulb holder touchs earth it’ll blow a fuse.
*I run the RITA and coils in the same way, a seperate sub-loom that plugs into the main loom via the fuse box.
This way any problems with the charging or the ignition can only be in these seperate looms/systems.
IMHO trying to plug a new charging sytem into a 32 year old loom is asking for a shed load of problems, you could be going around in circles/chasing problems almost forever…
There’s miles of wire in the original loom that doesn’t need to be there, they weren’t very good looms (or most of the switch gear etc) when they were new.
I lost count of the original ignition switches I went through over the years, until I fitted a Honda item which I later simplified to use only 2 wires, mounting it by the LH side panel so the wires didn’t need to run all the way upto the headlamp, from there to the ing’ switch and then all the way back again via the headlamp.
The same goes for the parking light function, who’s ever used that? There’s wiring in there for a kill switch that was never fitted…
It’s just more things to go wrong that didn’t need to be there in the 1st place.