After enquiring through (one of) your dealers and calling EI directly it was clear that you provided good customer service and would likely not drop the ball on tech support, and so far I have been right.
A-104 Adapter Plate
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Product Overview
Prices
Retail Prices
Included:
A-104 TR-1 Adapter
Description
Package
Retail Price
A-104 Adapter Plate
A-104
$128
Lead Time: Usually ships within 2–3 business days.

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Customer Testimonials
Sharp-looking gauges. [I chose EI because of your] reputation.
- Customer
Garrett R. from Alaska
- Aircraft
Beechcraft King Air Model B100
- EI Instrument
Works great!
- Customer
Ronald G. From Washington
- Aircraft
Cessna 195A
- EI Instrument
Good equipment at a good price. I have used your products before and have had great success.
- Customer
Ryan M. from Oregon
- Aircraft
Cessna 172L
- EI Instrument
Awesome Tech Support. Like the functions it supports and the fit and look in the panel.
- Customer
Brian M. from California
- Aircraft
Mooney M20F Executive 21
- EI Instrument
Good reviews and I don’t have to modify my panel. Additionally, the reps at Oshkosh were extremely helpful and answered all my questions.
- Customer
Michael M. From Iowa
- Aircraft
Cessna 182N Skylane
- EI Instrument
Very happy with our new tachometer!
We have other EI products currently and have always been satisfied.
Good engineering support.
- Customer
Richard B. from New Mexico
- Aircraft
Luscombe Model 8E Silvaire Deluxe
- EI Instrument
Excellent Service. Superb Product.
- Customer
Steven N. from Colorado
- Aircraft
Cessna 182E Skylane
- EI Instrument
Great to have all 6 egt’s, installation was straightforward. [I chose E.I. because of] price and availability.
- Customer
Errol O. from Ontario, Canada
- Aircraft
Cessna 182 Skylane
- EI Instrument
[Customer service] is great!
- Customer
Paul Z. from Oregon
- Aircraft
Cessna 182A Skylane
- EI Instrument