I am testing my 1977 T140 charging system with a multimeter. When I get the meter close to the running bike the meter is erratic at best. I am using Champion N4 plugs which is causing the erratic meter readings. As these plugs are not R rated I need a recommendation for a multimeter that will do the job. I believe it has to have EMI suppression. Thanks.
The coils are the likely culprit ! Build a Faraday cage , put aluminium foil about an inch or more over and above the coils. A large old metal kitchen strainer ?? Then try your Meyer readings again.
youre using a modern digital multi-meter? can you buy a cheap analog instrument from an elctronics store? radioshack used to sell a little VOM for less than ten bucks. no electromagnetic issues at all. modern is not necessarily appropriate.
Thanks for the input. I ended up getting a new Klein Clamp on multi meter. All Good now. I needed to upgrade any way. Thanks all for your help
Its the cheap Multi Tester.....you could try another brand maybe ok....I take it that its fine engine not running....
