Hi, just to expand on what David has said, ( and he did invite me to post, this is not a random advertisement ! )
There are two different meter frames fitted inside the series 1 AC driven tachometers.
The early type have a different distance between the mounting holes we use for our internal kit, making it very difficult to fit.
The later ones have the holes in the right place but there is an added complication.
The back fibre plate with the terminals on on both these AC driven tachos makes it harder to fit the kit but not impossible.
I would advise for both types, using our external mounting kit which comes in a plastic box as below.
This was deigned to work using the points side of the coil to trigger, but in theory should also work with the AC generator. Until that is shown to be the case I would recommend driving it from the coil.
If it proved to work with the AC generator, then it can could be installed using the existing trigger wire, and if the generator were to fail at a later date, could easily be swapped to coil triggering.
For all RVI tachometers ( that have the current loop in the back ) then I would recommend our internal or external kits. The internal kit takes longer to fit but there is nothing extra to fit behind the dash.
Both the kits have the same electronics which can be triggered from a sports coil, a standard coil, or from an ECU. They work with standard points or the electronic trigger modules that fit inside the distributor.
If we can show that it triggers correctly from the tacho generator that would be great, but we are not there yet !
Chris
Spiyda Ltd.
...works fine...
