[Healeys] Main beam warning light

Bob Spidell bspidell at comcast.net
Sat Sep 10 08:18:38 MDT 2022

Apparently a muddle. I don't have a BT7, but AFAIK all speedometers 
after the 100s had a blue(?) high beam light and the tach had the red 
ignition warning light. There is no need for a 'ratio' on the tach; I 
believe your car would have cable drive whilst later cars would have an 
electronic tach, driven by coil input pulses.

On 9/10/2022 1:41 AM, Simon Lachlan via Healeys wrote:
> We’re looking at a MkII BT7 here……….
> So, my speedo has just come back from calibration and, comparing it to 
> the one still in the car I see that the former has a RED “Main beam 
> warning light” whereas the latter, still in the car, has a BLUE one.
> The bible, Anderson & Moment, is confused and confusing on the topic. 
> Page 104:- “……next was the speedometer, with a number on its face 
> indicating its ratio, and which included a mileage meter, resettable 
> odometer, and the RED “ignition” (discharging) warning light……….On the 
> right was the tachometer with a number on the face indicating the 
> ratio, and incorporating the RED high-beam warning light.”
> Now, unless that all refers to LHD cars, that’s just a muddle. 
> Doubtless subject to subsequent corrections.
> However, it leaves me confused as to which colour is correct.
> So………………?
> Thanks,
> Simon
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