mikelupo
New Member
Hi. I am installing the SV-EMS-220 engine monitor. I have read several posts regarding getting tach indications from a Surefly emag. All of which seem to point to needing the Surefly tach2 board installed. As luck would have it, I do indeed have the Surefly tach 2 board installed and am picking off the 0-5V lug on the tach 2 board. I have that wired directly into pin 35 (blue wire) for the left side low-voltage input.
The result of this test is that I see 0 RPMs when I isolate to the emag.
As a sanity test, I put an ohm meter between the L plead and ground lugs on the tach 2 board. When the key is in the off position, the plead is positively grounded from the tach 2 board's perspective and my ohm meter beeps. Conversely, if I set the key position to the emag, the circuit between the ground and plead is open from the tach 2's perspective. So it seems that there are no wire gremlins (caused by me) to remedy.
Has any one had this problem and how did you rectify?
Thanks,
Mike
ps... I get tach indications from the slick (analog) mag so at least I have that.
tag @Dynon
The result of this test is that I see 0 RPMs when I isolate to the emag.
As a sanity test, I put an ohm meter between the L plead and ground lugs on the tach 2 board. When the key is in the off position, the plead is positively grounded from the tach 2 board's perspective and my ohm meter beeps. Conversely, if I set the key position to the emag, the circuit between the ground and plead is open from the tach 2's perspective. So it seems that there are no wire gremlins (caused by me) to remedy.
Has any one had this problem and how did you rectify?
Thanks,
Mike
ps... I get tach indications from the slick (analog) mag so at least I have that.
tag @Dynon
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