V7 voltage regulator connections help please

[tonUPRacer]

Gooses,

I'm replacing my overcharging VR and need some help making my connections. I've searched our lengthy thread here and on Guzzi Tech but couldn't find any clear instruction on how things are wired up. Can someone please give some very basic and clear instruction? I have 6 wires, 2 green, 2 yellow, 2 red/white. I have a grey connector and a black connector, it looks like there are 5 terminals, which wires go to which connector? I've attached a photo showing my old regulator with the snipped wires and the new VR above it with the new connectors and the wires waiting to be soldered.

I have new baby that is due any day now so my window for wrenching and riding is closing quickly. Thanks in advance,

Andy

[Kev m]

Assuming you've got the same Mosfet unit that a bunch of us used (and I think Todd at Guzzitech was supplying too) then:

* The gray connector (left side of the regulator in this picture) is for your 2 Yellow wires. That goes back to the stator and is the power input.
* The black connector (right side as shown) is for your power output wires - 2 Red/White (Battery Positive) and 2 Green (Ground).

We got our regulators from http://www.roadstercycle.com/

and Jack (who runs the site) set ours up for us, putting wires on the terminals that we just had to solder into the existing harness and connector (snipped from our old regulator). I didn't note the terminal positions, maybe Jay (Jas67) remembers (since he did the soldering for us).

But the illustrations on the website look like the RED (positive output) is the left portion of the black connector (again looking straight on at the regulator terminals, so that would be the right side of the loose connector that plugs into it).

Similarly the GREEN (ground side) is the right portion of the black connector on the regulator (or left side of the loose connector that plugs into the regulator).

I'm assuming yours is the same, but check face of the black connector on the regulator and see if it is labelled (+ and -) or possibly with color coded dots (Red for + and Green for -).

Hope that helps...

[tonUPRacer]

Mille Grazie Kev,

Yes mine is the Mosfet from Guzzi Tech. So the red/white and green are twisted/soldered together in the black clip, any idea if it matters which wires are twisted together? I'll check the roadster cycle site as well. Seems fairly straight forward. I'm doing my fuel filter as well since I already have the tank off. I'm hoping to get this done this week and go for a ride before no. 3 arrives. I'll post with results and show my connections in case it can help someone else.

[Kev m]

Mille Grazie Kev,

Yes mine is the Mosfet from Guzzi Tech. So the red/white and green are twisted/soldered together in the black clip, any idea if it matters which wires are twisted together? I'll check the roadster cycle site as well. Seems fairly straight forward. I'm doing my fuel filter as well since I already have the tank off. I'm hoping to get this done this week and go for a ride before no. 3 arrives. I'll post with results and show my connections in case it can help someone else.

It very much matters.

The two Red/White wires are the POSITIVE output connection. They must both be attached to the correct side (positive output side) of the regulator.

The two Green wires are the NEGATIVE output connection. They must both be attached to the correct side (negative/ground side) of the regulator.

They cannot connect to/touch each other.

[tonUPRacer]

This is why I like wood-working! I've never understood electricity. Thanks for saving me from a costly mistake! So, two reds together on pos term and two greens together on neg terminal. My apologies for my stupidity!

[Kev m]

In case it helps you or the next guy, here's a snippet taken from a V7 wiring diagram that shows the basic inputs/outputs for the VR:

[rodekyll]

Not stupid.  Wiring default colors are 'changing'.  We used to think of black as ground and red as hot.  Now blue is hot and green is ground, unless one is brown.  Or something.  The point is that it's better to ask than let the smoke out.

Kev m -- I got the reversing gearbox for my trike from Jack at roadstercycle.

[Kev m]

Jack seems like a real stand-up guy!

[TheHungarian]

I just got my replacement Mosfet VR in the mail from Jack at Roadstercycles (great guy!). This is for a '13 V7 that is pushing a consistent 15.7 volts to the battery at speed. I also got the nicely machined bracket from him, but I found what I think is an alternative mounting point. Above the stock frame mount is another horizontal frame bracing with a few holes which the bracket just fits. I even moved the captive nuts up to there from below and it works. These pics are just a test fit:









Can any of you guys who've done this install see why this wouldn't work? There is no interference with anything that I can see and I'd actually be able to pull the stator cover in the future without pulling the VR off. It's just about 4" higher than the stock location.

Also, while I might have your attention, the last time i put the gas tank back on, I ended up with an extra washer (see pic). The rubber grommet goes in from below and the metal fitting from above, then where does the washer go? I'm having a brain fart. Thank you as always!





Best,
Mike