Modern Vespa

Hey all,

I purchased a wiring harness from Scooterworks but I am not sure it is the correct one...

This is the on I bought... I have a VNX2T frame. Is this one for the bikes with a battery? I can't really tell from the description. My buddy with a little more experience with them seems to think it is which leaves me cold since I am going battery-less. I don't see another one available. Will I have to modify it some how?

Hmmm... that's a standard single yellow P200 stator. I'd really be surprised if you could run it non-battery on a P125.


*edit* ...yeah, you bought a battery harness. If you're going non-battery you should be looking for a euro-style harness.

That part number is for an American Market P-series with a battery. You would have to re-work or maybe return it. There really isn't a harness that would go in an American market P-series but not include a battery in the system. That would be a custom application.

I have European market PX. Is there one made for it?

Depends which stator you have. If you have a single blue hot wire stator, I believe we have a harness for that. That would be a stator that has the three CDI wires (red, white, green), and one blue power wire, and one black ground. I can check tomorrow when we reopen.

This is my stator... Let me know when you can. If you have it I'll order it tomorrow...

In the meantime, anyone want the wiring harness I had mentioned above?
It's yours for $40 w/shipping. To return the item there is a 20% restocking fee and shipping so it is worth my while to sell it cheap than return SW.

Nice...you're running a euro stator. Yeah, just get a single wire input euro-style harness and you're golden.

Well, I am starting find out the the non-battery european style harnesses are bit rare. Max said he didn't have one. Scooterworks doesn't. ASC doesn't at the moment.

Looks like I might need to modify or fabricate something?

When my buddy dropped his P200 motor into his Sprint body he bought this:
Harness Kit, Wiring Conversion

Part No: EIKHK

Price: $99.00

This is the complete harness kit for doing a non-battery wiring conversion. Works perfectly with our EIK1 electromic ignition kit, LCB1 coil pair, or installing a 5 port motor in a vintage scooter.

He said it worked fine but since the P controls are on both handlebars it won't work for me.

What if I just bought the just the harness and soldered extensions wiring to the wires that would need to go to the opposite handlebar? Would that work?

Yeah, i'm sure you can modify the loom as you need it with jumper wires and such.

I'd keep hunting for a euro one, though.

Have you considered SIP or scootersource.de ?

Heh, I haven't looked at SIP because I was thinking the shipping would be fairly outrageous like when I got some stuff from them for my GTS. I probably should take a look anyway tho.

I'm going to do my darndest to get these in stock. We've been trying for a while. Everyone is selling those single blue wire stators, but no one is offering harnesses for them. Don't wait on us, but for future reference, this is on my hot list.

The scooterworks one is really nice, FYI. They sell them.

Now, there's no turn signals or any of that other jazz on that harness - it's just a simple single-power wire conversion harness.

Sweet. thanks Max.

Eric are you talking about the one I mentioned above or another model?

The EIK harness with the single wire to stator is tits. I run that in my P.

Just run the loom. You need to change the horn though (I think) or just run without one. I can't remember if the P came with an AC or DC horn, but whatever it came with you need to change to the style that came in the non-battery scooters.

As Eric said, you can bodge your P wiring in the headset into this loom. I just did it with mine - granted I'm not running turn signals because they're for (offensive term here), but the headlamp (halogen), running light, brake light, and horn all work.

Get the harness in and hooked up to the stator, you can use a multimeter to find out which wires are hot and work from there.

+1 the SW conversion harness.
And as Corsa states you may need to get another horn. But you can wire in a rectifier to make your DC horn work. I'm doing that with my US spec rally since those horns are a bitch to find. The rectifier is about 5 bucks from radio shack.

Deacon - how's your horn volume after it gets rectified power?

( you doing full or half wave rectification?? )

Man, I am really starting to peel the onion now...questions beget more questions.

This is my horn that came with the bike: Horn, 6/12 Volt DC - P Series Early
So just to understand, I would either need to get an AC horn (which a 12v model doesn't seem to exist) or a rectifier to convert to DC for the horn if I got the EIKH1?
I am no electrical engineer...which has got me scratching my head. Where the heck the AC power comes from?

P200 diagram, which looks identical to the PX's

Another question would be do these harnesses bypass the junction box under the horn cast or will I need to make a loom that runs from the headset to the box?

And call me anal but I wants my turn signals!! LOL From the diagram it looks like it wouldn't be that difficult to add additional wiring to the EIK harness for them.

My buddy Joe (who I hope will chime in here) thinks he can modify the battery harness to go battery-less. I'll keep everyone posted to what we do.

AC comes off the stator, hence the rectifiers needed for DC horns and battery charging circuits.

It renders that box obsolete.

Your "hot" (I think it's blue) wire runs to the horn. Another wire runs from the horn up to the headset.

It's strange but if you go this route and get it and come to hook it up I can help you from that point.

Look at this: http://www.chipcook.net/eik_harness.pdf

And a bit of info: http://scooterbbs.net/bbs/showthread.php?t=76383 (since you WILL have a pilot bulb in your scooter)

Learning as I go...I was thinking it was DC to start with for some reason. Thanks for that diagram Corsa. That is much easier to see what is going on.

http://www.scooterworks.com/Horn_6_12_volt_AC_P1213C453.cfm

That horn works btw. It's 6 or 12 V.

Sweet...the less mods the better.

6v horns don't seem to care if they're fed 12v.

Whether or not it adds a greater or lesser load to the circuit, MDchanic will have to answer.

That's only really applicable if you're running a single output, regulated, non-battery setup. You hit the horn button and the rest of your lights dim. How much they dim might be more or less with a 6v horn on a 12v stator. I'm not that smart.

If they dim, no biggy.

For the turn sigs, is it as simple as getting the appropriate colors* and running from the switch:
violet to RR
yellow/black to RL
brown to RF
and green LF?


*I know I could do it with one color but to avoid confusion.

I don't run a regulator - I run a clipper diode, but my headlamp dims slightly when I apply the rear brake.

Can't tell about the horn. I know I have one, I know it works, but I can't hear it.

I think you need the "blinker" thingy wired in there somewhere that actually flashes the bulbs.

What I'd do if I absolutely had to?

Run the harness right up to the headset and bypass the AC horn.

Run a hot battery and hook your signals and horn to the battery. You'd have to build a harness but it'd be easy AND it would be separate from the harness running to the stator, etc.

Throw a battery tender onto the battery every couple of days.

There is a guy in Grover Beach CA that makes custome wiring harnesses. He owns Santa Maria Vespa aka Bulletproof Vespas.
His name is Mark and here is his info if any are interested.
He produced a new harness for my 1974 Rally that he converted for me (he rebuilt the motor for me) to 12 volt with no battery. Cool harness in that it comes in two parts. The Head piece wiring is one section and the body another. It connects below the head piece and appears to be really slick. I am on the final stages of restoring the Rally and have actually not started it yet. Cool thing about the conversion (i hope) is that there are far fewer wires now than before. (OK so its not a total vintage classical restore, its my first)
Rick



Bulletproof Scootershop
The only Vespa Dealer on the Central Coast
354 Front street
Grover Beach Ca ,93433
Tele# 805-489-0277
Hours Tues-Sat 10-5
WWW.bulletproofscootershop.com

Sorry I've been out of town and missed this reply. Good question Eric, I haven't cranked it up yet. Just finished the paintwork and plan on pulling cables and wires next week.

I will say that I'm assuming there may be some drop off. To help smooth it out I want to wire in a capacitor, but for the life of me can't figure out which one to use. Was thinking of going with 12v 250uf?

*edit* ohh and it's a full wave, this is the one I used, recommended from Dano on the bbs

http://www.radioshack.com/product/index.jsp?productId=2062584

Max, why not just have Jeff make a few? If you've been having people call for them, you could just have half a dozen in stock.