Warning Light Assimilator

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My Ignition warning light assimilator is inop and in need of replacement. Is this a generic part I might find at a local shop, or more elusive?

Thanks
 
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norvil or fairspares can sell you one

the old org Assimilators were electro mech the new ones are totally electonic .
brought in by norton to save costs cheaper than a ampmeter

ps dont trust them use a mutimeter to check charging

or retro fit a ammeter
 

Ron L

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The later (1975) solid state assimilator (P/N 066393) has connections for both legs of the alternator and a switched (white) voltage wire, a lead to the light and a ground, where the original mechanical has only one leg of the alternator, a lead to the light and a ground, so you will need to run a couple extra wires.

The alternatives are a simple voltage switch which wires between a switched negative lead, a ground and the light. These generally turn on the light when the voltage in the wire drops below 12.5 volts. These are usually small cubes that can easily be mounted inside the headlight shell and are less fragile than the mechanical assimilator and work at least as well. These are available from several shops such as RGM and Al Osborne, but not as easily found in the US.

Of course an ammeter or battery status (voltmeter) monitor will also work if you don't mind finding a place to mount them.
 

maylar

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I have one of those on my MKII. It works OK except that the light comes on dimly with the engine running, which kinda annoys me.
 

batrider

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I don't see that on mine ('72 750). It would annoy me too. Maybe add a resistor in parallel with the bulb? I have seen solid state devices with enough leakage current when OFF to light a neon bulb but I'm not sure what type of bulb is used for the warning lamps. Also neon bulbs usually need about 50V to fire so it probably is a normal filament bulb of some sort.

Russ
 

ILLF8ED

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maylar said:
I have one of those on my MKII. It works OK except that the light comes on dimly with the engine running, which kinda annoys me.

I put one on my '72 750 a couple of months ago. Much better than the electro mechanical original assimilator. Mine has a bit of a glow at idle and not that bright with ignition on and engine off. This is with a new alternator stator and rotor. Russ do you have a high output alternator?
 
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Well ~ for what it is worth... I have NOT had one for some 15 ~ yep ~ FIFTEEN years.. :roll:

And I have not had any issues ~ 8)

Works for me!!! ~ to date ~ :D
 
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maylar said:
I have one of those on my MKII. It works OK except that the light comes on dimly with the engine running, which kinda annoys me.
I installed the "Cool Cat" box today. It works great. Yes there is a very slight glow (hardly visible in the daytime) when the engine is at idle, but once you come off idle, the light goes out. Great solution.
 
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