It says miniature but does not mention a size. What is mounting hole size and diameter of light?
The mounting hole should be approx 15/32", and the lens is .650".
What are the part numbers for the bulbs?
Part numbers for replacement bulbs are 11-04016 (GE-330) and 11-04015 (GE-327). See "Accessories" tab to purchase.
There are 3 prongs on the back of Press to test indicator. Which tab is used for which?
There are three prongs labeled labled 1, 2 and 3. When hooked up, 1 is ground, 1 & 3 is on and 1 & 2 is off.
Which 2 prongs on the MS25041 indicators are used for push to test function? 1&2 or 1&3?
We have added a drawing to the 'Documents' tab of this web page. Please review the details by downloading the PDF.
Can the MS25041 press-to-test indicator lights be used in certified aircraft?
Yes, these are MIL spec units and can be used in certified aircraft per the manufacturer.
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