5 replies to this topic

[earthling]

Hi, I have been given a lovely old Speedwell tachometer but there are no instructions. I want to put it in my 1275 van.  I managed to download an original instruction sheets but the wires coming out of the unit are not marked so the instuctions don't mean very much.  There's a thick black one, and a thick red one, a thin black and a thin red one -

 

Also on a coil wired to electronic ignition which side of coil is SW and which is CB?

 

Can anyone help?

 

Thanks

 

Adam

 

 

[gazza82]

CB is to the distributor ... ie contact breaker

 

SW is switched live

[KernowCooper]

SW is Coil + and CB is Coil -, is there marking on the face of the Tacho RVI or RVC if it says RVI then its not going to work with electronic, there are companies though that do a conversion of the internal circuitry

[earthling]

Hi thanks for that - I have looked but can't see markings like that on the face of the dial

 

Thanks

 

Adam

[KernowCooper]

What connections are there on the rear, I hope you dont see a loop of wire !

[earthling]

There's a thick black one and a thick red one, and a thin red one and a thin black one