Rear Cabin Lights (Part 3)

Time 3.25 hrs

More work on the rear cabin lights today and yesterday. Now I need to wait for a few parts to finish it up. It’s getting there. I’m kind of wishing I just bought the Aveo lights, it would have saved a lot of time.

I had to change the way I did the dimming and switching of teh front lights because of the way the lights are wired. The Airkit lights for some reason have a single power lead and two grounds , one for the white light and one for the red (rather then a single ground and seperate poor for each colored light). I didn’t like how the potentiometer was dimming the lights so I wanted to use a PWM dimmer to get better dimming. The problem is you can’t dim on the ground side so I had to do away withe the dual concentric knob idea and go with a double throw switch (to select the red or white light) and pot to control the PWM dimmer. It’s a bit of a tight fit to get the switch and pot on the mounting plate, but the tiny pot that comes with the dimmer helps. The pot also has a switch built in so that removes the need to put that in the dual throw switch.

I made a new anodized plate (I didn’t like the gray one) and did the cut outs for the dual throw switch and pot. I found a nice knob made by Kilo International on Allied Electronic’s site. They make a few styles so I purchased a few different ones to see what would work best.

Ran the wire to the rear cabin lights and pinned the ends for the connectors. The rear lights just use a 2 pin connector (+14V and Ground). This will connect to the touch dimmer and I’ll just wire that directly to the light. Oh and I also riveted in the nut plates as well.

It’s getting there. I never imagined it would take this long to get everything installed and wired up. There’s been a lot of trial and error. mainly because the space is so minimal in the canopy roof. The small circuit board hanging is the PWM dimmer (really a motor control) that I got off Amazon. It takes 14V in and then just a connection out to provide dimming for the lights. The ground side will go into the double throw switch. The PWM dimmer has a connector for the on/off switch and another for pot.

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Rear Cabin Lights (Part 1)

Time: 1 hr

The rear cabin lights (same manufacturer as the front lights… Airkit, LLC) finally arrived from Aircraft Spruce so I made the round mounting plates from the anodized aluminum that I had purchased a while back. The lights are a lot smaller then I thought, but I knew they weren’t going to fit anyways. I also tested the touch dimmer on them and it seems to work fine so I’ll have to wire that up next. The factory cut holes for the rear lights are around 1.9″ (0.4″ larger then the front) so the mount plates needed to be a little larger.

Finished mounting plates. The lights fit a little loose inside the mounting plate so I may use a little bit of RTV when mounting them and make sure the mounting ring is nice and tight so they don’t slip around at all.