Very easy to install. Harness is clearly marked. Instrument worked first time. The instrument is intuitive and easy to use.
- Customer
William F. from Maryland
- Aircraft
Mooney M20C Ranger
- EI Instrument
8am–4:30pm PST M–F
[mbhi location="Main"]
A-102 Adapter Plate
A-102
$28
Lead Time: Usually ships within 2–3 business days.

Very easy to install. Harness is clearly marked. Instrument worked first time. The instrument is intuitive and easy to use.
So far, great product
I have been flying with EI instruments for over 20 years. I purchased the CGR-30P to update my engine instruments into one modern package.
The tach looks and operates amazing. Extremely accurate.
Great customer service!
Great service. [I replaced/upgraded] unit in aircraft.
The reviews online were very good. Customer service has been great.
Great product, frees up space
Very complete and thorough packaging. Well-prepped wiring harnesses. Quick and efficient turnaround time. Great communication throughout the process.
The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
I have used your products in every airplane that I have owned over the years and have never had a problem. Thank You
The FP-5l I had installed is easy to use and so accurate it’s almost scary. When I find a company that produces a product that good I stick with them. The fact that these instruments also look so darn good didn’t hurt either.