Electronically the smiths tach is a relatively simple two germanium transistor inductively coupled electronic tach. Installation instructions for a smiths tachometer for the classic mini cooper.
Smiths Digital Chronometric Speedometer Installation Help
Smiths tachometer wiring diagram. Am hopeless with wiring diagrams. Built in led lighting. By way of a loop of wire in series with the ignition coil attached to the rear of the case. Where can i find this info on a 65 midget positive ground where the system has been upgrades to an electronic ignitionnew coil and new generator. Tachometer wiring excerpt of 123gt diagram 1800 tach wiring is substantially the same. Connect one white wire to the coil terminal the other white wire to the distributor.
The following diagram shows the schematic of the tach. Mgb smiths tachometer wiring schematic and parts diagram. Wiring diagram for smiths classic gauges a coupe of guys were discussing the wiring of ammeters on the yahoo. Its a pretty simple diagram but it shows how to wire the following items ammeter. Run enough wire to reach the msd ignition control box mounted on the firewall in the engine compartment. Now smiths offers a set of gauges for your motorcycle that was made across the channel.
2012 04 13 221435 5617. Ignition coil primary current path is shown in blue and only one polarity of white sensing wire will allow correct tach function. The european look tachometer will look great on your ducati moto guzzi bmw and even your japanese bikes. Triumph herald group so ive dug out this wiring diagram that came with an oil pressure gauge i bought for the coupe. The easiest way to fit the rvi tach to a car that does not already have wiring for it is to run 2 white 16 awg wires from the dash to the ignition coil. Strip the end of the trigger wire for the tachometer and place a female to female connector to it.
Can be set for positive or negative ground. Circuit diagram of generation one and two smiths tachometer as used tachometer wiring excerpt of gt diagram tach wiring is. Disconnect both ends of the whiteblack wire going between the coil and the distributor. Tach now runs at 2000 to 200rpms. A gentlemans guide to smiths tachometers updxdoc page 6 of 20 iron core plastic former with early type rvi pulse lead assembly rvi oem tachometer. I think i may have the zener symbol upside down btw the two transistors together form a monostable multivibrator or one shot.
Comment by robbie p. As noted above there are two versions of the rvi type tachometer. 12 volt positive or negative earth. New euro style smiths gauges. Fit new wire from the femalefemale connector and run the wire directly from the spool through an open point on the firewall.
Gallery of Smiths Tachometer Wiring Diagram
