Warning Light Assimilator with Boyer?

Supercat · Apr 24, 2018

Hi there,

And the latest in my series of wiring questions relate to the warning light assimilator:

1) I assume I can use the original warning light assimilator when running a Boyer ignition? Is that right?

2) I found the assimilator I have in a box of parts that I got from the PO. I'm not sure why it was removed - is there any risk of hooking it up if it's broken? If so, is there any way to test it?

Thanks!!

Peter R · Apr 24, 2018

The warning light assimilator is in fact a voltage sensitive relay, and will certainly work when running a Boyer ignition.

Supercat · Apr 24, 2018

Thanks Peter!

XTINCT · Apr 24, 2018

You may want to take a look at this.
http://www.sparkbright.co.uk/battery-voltage-monitors.php

Stephen Hill · Apr 25, 2018

I prefer the solid state assimilator, part 06-2054
Plugs into the stock harness, screws into the original spring.
Replaces the fragile, primitive circuitry in the original assimilator.
Comes in Andover Norton packaging.
Comes in either positive or negative ground configurations.
I bought mine from Old Britts. but here is what it looks like:
https://www.ebay.com/itm/NORTON-COM...ILATOR-PN-06-2054-38706-NM38706-/401124078110

Stephen Hill

Supercat · Apr 25, 2018

Thanks for the tips Xtinct and Stephen. I'm going to try the original for now just to see if it will work. It may very well be broken - I'm not sure why the PO had it off the bike. He didn't throw it away, so I guess there is some hope. If it doesn't work I'll be in the market for something. Has anyone tried these: https://www.improvingclassicmotorcycles.com/products.htm

Supercat · Jun 2, 2018

Ok, hold on, I've just noticed this link that's gotten me scared again about running the Boyer and warning light assimilator together: http://www.boyerbransden.com/pdf/PBOX00108.pdf

I just wanted to double check, as I don't want to fry anything. Thanks again!

J

L.A.B. · Jun 2, 2018

Supercat said:
Ok, hold on, I've just noticed this link that's gotten me scared again about running the Boyer and warning light assimilator together: http://www.boyerbransden.com/pdf/PBOX00108.pdf

I just wanted to double check, as I don't want to fry anything. Thanks again!

That's a Boyer Power Box which is a regulator/rectifier and totally different to Boyer electronic ignition.

Supercat · Jun 2, 2018

Phew!!! Thank you LAB. That's a relief.

lazyeye6 · Jun 2, 2018

When I installed a Podtronics solid state rectifier/regulator the assimilator light stayed on all of the time, so I removed the assimilator.
Then I Installed an oil pressure sensor I purchased from Madass 140 and wired it to the unused warning light. PERFECT!

lazyeye6 · Jun 2, 2018

Remember that an assimilator does nothing but tell you if you if your alternator is producing voltage.
It tells you nothing about whether your battery has a full charge. Kick backs occur when using a Boyer
with an insufficiently charged battery. I use one of these to test it quickly and easily read the voltage charge
of my batteries. https://www.batterymart.com/p-081-0157-digital-voltage-indicator-lcd.html

Supercat · Jun 2, 2018

Cool, thanks lazyeye6. Yeah, I realized that it only indicates whether the alternator is producing voltage. But I'm still just excited that the assimilator and light are working

. I would love to install an oil pressure indicator of some kind. Sounds like they save engines, and I'm all for not destroying this one.

Thanks for the voltage indicator link too. I imagine it comes with leads that you put on your battery or power take off connections? I've been using a multi-meter all out here lately and could throw that in the side cover pocket even. The one you use would be smaller and more convenient for riding around with though eh.

Warning Light Assimilator with Boyer?

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