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Volvo D2 55C panel status light

I'd like to install a WakeSpeed 500 onto my Volvo D2 55C engine (we have a Benateau 423). The brown wire that is used to send voltage to the Volvo's existing electronic panel (and tells it that the alternator is working properly...see attached schematic) seems to be happy if it gets a system voltage. But I'd like to go with the Wakespeed 500 which has a different setup (i.e. the #2 wire in the to dash lamp "goes to ground" if there's a fault.

So I'm wondering how I would connect this up to the #2 wire in the "goes to dash lamp" part of the wakespeed 500's larger wiring harness." Do I use a relay to do this somehow? If someone can explain how this work's you guys have got a sale from me.

Also can the wakespeed handle a 250 amp (external rectifier) alternator?

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Hey David,

It seems your interposing relay idea is the solution that tech support recommends as well. Here is their response.

The solution I found for the D255 and others with the + signal for the dash lamp is to use the dash wire from the regulator to activate a Tyco or similar 30A relay. Depending on the signal that’s required, a normally on or normally off relay can be used. The negative signal from the regulator can be used on the switched side of the relay to open or close, and the positive voltage can be passed through to the electronic panel. That’s the $20 solution, and probably the easiest from an installer’s perspective as well.

As for the high output alt, that's easy, Yes. The WS500 field output driver circuit is designed for a minimum of 30 amps so even if your field is running at 10 or 12 amps you are good to go. (For high amp solutions contact us and we will get you a custom harness with an upgraded field wire that can handle 20 plus amps, typically only needed when you are controlling more than one alternator with a single WS500)

Hope this helps !!

One of our long time supporters has actually created a nice wiring diagram for this application.  He has also gone further and included a drawing for panels without key switches that do not provide an "Enable" point for the #1 brown ignition wire.  A big shout out for Ben.  Thanks! (from admin)

From Ben:

Yes I used this solution also a few times, see my drawing in attachments.

Another solution I use more often, but maybe to confuse for user:
I skip the function from the alternator light, because the user has a battery monitor.
I supply the horn on point 5 from a positive(only + if ignition is on), this way the panel worked as normal.
No relay needed. That's why I was confused with your answer.
Leave the brown volvo penta wire disconnected.

I attached the diagram from inside volvo penta panel, handy if you dont have.
Also another diagram I made a while ago.
A solution if no enable signal is available, as on some new volvo penta panels/engine wire.
If you have a better solution for this let me know



Uploaded files:
  • Diagram-for-VOLVO-PENTA-new-panel-that-only-provide-a-stop-and-start-signal.-not-ignition-on-signal-version-2.png
  • diagram-ws500-to-old-style-dashboard-light-volvo-penta.png
  • volvo-penta-dasboard-box-with-lights-control.PNG
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