Boat tachometers

[captain tacky]

West Marine- Bass Pro - Caballa all have them and are inexpensive, I have had to replace mine and several friends over the years.

[Bggeary]

Ok, back to square one. Took the tach to a guy in Delaware (close to home) he had some kind of meter and tested the tach and said it was fine. He also said that some electronic ign. wont talk to the tach unless you add something, condenser or something. Anyone know anything about this? I couldn't tell him the brand at the time but I now Know it Pertonics bought it at Lakeland down from the airport in PC. Any help???