No responses from the peanut gallery? Well here's one from me.
PO ditched the assimilator on my bike some time before I bought it. I guess the things had a high failure rate. There's two wires going to it, an ac and a dc. Grounding the dc lead turns the warning light into an "ignition on" light, which is what he did. I've left it like that, it's kind of a nice feature. When my Lucas ignition switch went bad a couple of years ago, the flickering light helped me figure out what the problem was.
Debby