sfmse

I used to have a '67 F that I leased back to a flying club. Two stories: I got a call from the owner of the flying club asking me if I had shortened the seat belts - since I'm not a small guy I'm wondering who or what is trying to wedge himself into my poor Mooney. Second story: I was in Maine visiting a friend and he said there was a grass strip just down the road from his house. We looked at it and it sloped up briskly from the water's edge, went under some power lines and did a dog leg right, in addition to not being in very good shape. I decided that was not a runway I needed to try out. A few weeks later I was talking to one of two brothers who often rented my plane. It turns out they were from Maine and when I asked where they grew up it was near my friend's house. I mentioned the grass strip and he told me they took my Mooney into that strip all the time!

Is this for the OEM annunciator panel Mooney installed? I have some wiring diagrams (with pin outs for annunciator panels). Depending on the serial number of your Mooney, I may have a wiring diagram I can check.

I have a '90 MSE with the OEM annunciator panel. I don't remember the last time I saw the high/low vacuum light either flashing or solid. I had the annunciator panel overhauled a few years back with no change. Recently, I checked the vacuum switch on the back of the attitude indicator and found that it was working correctly. The wires from the vacuum switch (3 wires) go into a cannon plug. The first indication of an issue was that the mating cannon plug only had two wires coming out of it. After tracing that side of the cannon plug, I found that those two wires had been cut and capped. A while back I had a major avionics upgrade done that removed the RNAV system (KNS-81) and installed a Garmin 430W. I'm thinking that the cannon plug with the two wires was actually the connection for the "remote RNAV" indicator on the annunciator panel which was cut and capped when the KNS-81 was removed. I've looked everywhere for the correct cannon plug with 3 wires that match the one coming from the vacuum switch without success. I'm ready to give up and wire up a new cannon plug from the annunciator panel d-sub connector to get the high/low vacuum light to work. The problem I have is that I have wiring diagrams for serial numbers near mine but not one covering my serial number (24-3191). From the wiring diagram I have for s/n 24-3271 thru 24-TBA, it looks like pin 20 on the annunciator panel d-sub connector is the low vacuum connector, pin 1 is high vacuum and pin 4 is labeled "28 VDC TESR". Can anyone confirm that those are the same pins for my aircraft (s/n 3191)? Also, the "28 VDC TESR" pin looks like the supply for the vacuum switch as the high/low vacuum circuitry in the annunciator panel is driven by a 28 vdc input (switched by the vacuum switch to the low vac pin, high vac pin, or no connection). Can anyone verify that? Thanks. Kevin