Volvo RWD 1800 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 8/2005 1800 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Re: Breakerless Ignition w/ SMITH Tach 1800 70

posted by  someone claiming to be Steve Seekins on  Thu Jul 8 03:22 CST 1999 [RELATED]

The problem is that your tach is series connectes and works on current rather than voltage. With the electronic ignition, there is plenty of voltage, but not nearly enough current to drive the Smiths tach.

The solution is to get a separate tachometer drive circuit that works with the voltage pulses and generates the proper current to drive the tach. Most makers of electronic aftermarket ignition systems can supply the proper adapter to drive the tach. COntact them and explain that you have a Smiths SERIES CONNECTED tachometer and they should be able to supply the correct adapter. If not, I believe that there is an article in a very old SEES (Volvo Sports America) magazine that has a circuit diagram so that you can build your own as I did for a 71 1800E that I had.






<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.