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Darrolio

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  • Location
    Santa Barbara, CA
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    Private Pilot
  • Reg #
    N2140D
  • Model
    M20S

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  1. I purchased the 2 MaxDims. I went last night and experimented with switching the orange highlighted wires to match the schematic, with the original dimmer box. This put the glareshield, compass, and map light on one switch, so it must be miswired on the other end too. These lights were also not dimming... just coming on at a low light. I decided to cut the wires at that point and hook up the MaxDims. Once all hooked up: The glareshield lights work beautifully now. Full range up to pretty bright. The compass and map light work great - full range. However, the instrument panel lights still are dark. I tested the power coming out of the dimmer for the panel lights, and get ~24VDC. So the issue was a combo of the dimmer box and something further down the line for the panel lights. Now I'm not sure where to look next in regards to the instrument panel lights...
  2. The plot thickens... First, when I said the lights haven't "worked for some time," I meant that they have not worked for as long as I've had the plane (~1 year). My father, who I got the plane from, swears they worked, but can't remember for sure. He says it checked out each time during annuals... but Glareshield was noted INOP on my annual. Both Panel and Glareshield wires have 24V power - I checked today per RoundTwo's suggestion. However, I found that the switches were cross-wired (you will see this in my pin diagram here in orange highlight, when compared to the Light Control Box schema): The Panel switch has the panel power, but wired to Glareshield out The Glareshield switch has glareshield power, but wired to Panel out So - the behavior seems to be: no light on either glareshield or panel, but the map light under the yoke stays on all the time no matter what. What I plan to try next: Cut wires LP07E20 and LP03C20 and cross+crimp, then try the old control box. If that doesn't work, connect LP07E20 (circuit), LP02E20 (positive), and Green / White-Blue / LP11D20 (ground) to the new dimmer and see if that makes the Glareshield work. If so, connect up the other dimmer. I'm not quite sure what to do with the GPS Annunciator wire, as it is going through some fancy box on the circuit board, but will try to wire with the circuit. If that doesn't work... time to fly it to my mechanic (during the day). Finally, I do not plan to install the inline fuse, as the kit recommends, since I have breakers. Sound like I'm on the right track? Thank you for all your help so far!
  3. Ok I’m at the plane now. I checked these - they are both getting ~24 volts. I have also mapped out all the pins and wires… it actually seems miswired according to the schematic. I will draw a little diagram and post tonight.
  4. Thanks RoundTwo - I opened up the dimmer box but no such luck - no fuses in or on our box... or in-line on the wires. I'm also normally a stickler about savings and standard time, but translated the lack of light lately into "savings."
  5. Deb pointed out that I should try looking at the Dimmer Box schema, which I have attached here. Thanks Deb! I honed in on the Light Control Box b/c the wire labels are a perfect match for that schematic. Behind the panel, the wires going to the Dimmer Box are as follows: LP06E20 LP11D20 LP73A20 LP02E20 LP03C20 1-3 Cluster of: LP12C20 LP14D20 LP07E20 3-1 Cluster LP19C20 of: Grn Wht Blu-Wht These labels all appear on the Light Control Box schematic, but only a couple appear on the Dimmer Box schematic. Odd. Googling how to read schematics...
  6. Hello Mooney Masters - Daylight savings is upon us, and it is time to repair my panel and glareshield lights as they have not worked for some time, limiting me to daylight flying. I read other posts on this site regarding replacing the rheostat box, and many recommended the MaxDim switch (instructions at this page). Savvy also recommended this switch, as it is FAA STC Approved / PMA'd. I received the two switches, and the instructions say to "Determine the Positive supply, Dimmer circuit, and chassis ground wiring." With the attached schematic, it seems... Positive: LP06E20 - panel lights positive supply LP02E20 - glareshield lights positive supply Ground: LP11D20 - though it looks like I will have to split it into two wires, one for each dimmer The Dimmer Circuit is throwing me for a loop, making me think this is above my head. For the panel lights, I assume: LP73A20 - GPS Ann LP12C20/LP14D20/LP03C20 bundle (compass, map, panel) For the glareshield, I'll crimp: LP07E20 But what is the LP19C20 bundle of wires that includes Panel Lights (Signal Out), Glareshield (Signal Out), and Lights (Common)? Also, bonus points for someone who can point me to the right inline fuse box that the kit recommends, but does not include. Hoping someone has accomplished this and can provide some guidance. I can crimp wires and test current, but I'm no electrician. Thank you and happy night flying! Darryl
  7. Thank you very much for this helpful info Niko182! I misspoke - it is a Hartzell. I will start calling around!
  8. Hi All! I will soon be the proud new owner of a Mooney Eagle with the 280HP / 2500 RPM Screaming Eagle conversion, and I'd like to upgrade it to the 310 HP / 2700 RPM STC. It already has the 3-blade Hartzell prop from the original conversion. a) Can I do it? b) Who is the person now to call for the STC?... it seems it has changed hands recently. Looking forward to getting active on these boards! Thank you!
  9. Thanks team! My father is looking for the STC binders. He did note that his RPM only increased from 2400 to 2500 (vs. the 2700 stated in the article).
  10. Hi Screaming Eaglers - I've been reading through the forums here, and found that the upgrade gives additional useful load. Some say 160, some say 168... how do you determine the increase? My father has a Screaming Eagle, and knows that his empty weight increased from 2282 to 2296, but he still uses the original POH gross weight of 3200. He doesn't recall hearing about any increase in gross weight when he got the upgrade. Is this determined on a plane by plane basis, or is the general rule of thumb to add "168", per the "Screaming Eagle Experience" article by Scotty Neal? Thanks for any pointers!
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