f1rocket
Well Known Member
If you are using a GRT EIS and plan to use a Lightspeed Engineering ignition in place of one or both of your magnetos, be aware that you cannot drive the tach input of the EIS from the LSE unit without internal modifications to the EIS. If you tell them about this when you order the EIS, they can make the modification before they ship it to you.
What bums me out more is that you cannot drive the tach input from both ignition systems at the same time. Therefore, you can't do a mag check at run up. You have to pick one or the other, or add another switch to your panel to switch tach inputs. I don't care for that. I don't need another switch in my panel.
I sure hope the EFIS units are a little better thought out than the EIS unit is. The wiring diagram/installation manual makes your head spin.
What bums me out more is that you cannot drive the tach input from both ignition systems at the same time. Therefore, you can't do a mag check at run up. You have to pick one or the other, or add another switch to your panel to switch tach inputs. I don't care for that. I don't need another switch in my panel.
I sure hope the EFIS units are a little better thought out than the EIS unit is. The wiring diagram/installation manual makes your head spin.