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heart911(at)adelphia.net
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 Posted: Sun Jul 15, 2007 6:30 pm Post subject: Landing Taxi lights wig wag |
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I had a problem today that I cannot solve.
I hooked up the landing and taxi lights through a SSF1 flasher
according to one of Bobs diagrams
The system uses 2 2-10 switches with middle position for wig wag.
The lights are Duckworth 100 watt with the wire from the lamps going
to ground on the last rib along with the grounds for the nav lights
Connected a battery to the main buss and forest of grounds.
The landing light works but the taxi light fuse (7.5A) blew and the
flasher did not work
I removed the wires from the flasher and again the landing light
worked and the taxi light fuse blew.
I reversed the wires at the taxi light with the light filament wire
now going to the switch and the light housing wire going to ground.
The reversed filament wire was connected the the switch wire with a
clip wire and the ground wire was connected to gnd point without the
nav ground.
Everything worked- Taxi-Landing light and wig-wag
I then connected the wires for final connection using knife splices
and a ring terminal for the ground.
Hooked the battery back up and nothing works not even the landing
light. The fuses are not blown, the panel instruments and nav lights
work.
The flasher buzzes when the landing light is off and the Taxi light
switch moves through the middle position.
The only difference was hooking the nav ground back up at the same
time. I don't have enough knowledge to know if this could cause the
problem.
Thanks for any advice or information
Jerry Forrest
RV6A
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nuckollsr(at)cox.net
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| Posted: Mon Jul 16, 2007 5:42 am Post subject: Landing Taxi lights wig wag |
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At 07:29 PM 7/15/2007 -0700, you wrote:
| Quote: |
<heart911(at)adelphia.net>
I had a problem today that I cannot solve.
I hooked up the landing and taxi lights through a SSF1 flasher
according to one of Bobs diagrams
The system uses 2 2-10 switches with middle position for wig wag.
The lights are Duckworth 100 watt with the wire from the lamps going
to ground on the last rib along with the grounds for the nav lights
Connected a battery to the main buss and forest of grounds.
|
Don't understand this. Have you grounded lamp fixtures to
the airframe locally . . . and then added another wire
from vicinity of lamps to the forest of tabs ground block
too? You need only one ground. Either from each accessory
to the firewall ground block -OR- local grounds to an all
metal airframe but not both.
| Quote: | The landing light works but the taxi light fuse (7.5A) blew and the
flasher did not work
I removed the wires from the flasher and again the landing light
worked and the taxi light fuse blew.
|
Fuses blow because of failure of some pieced of equipment
on the protected line (rare) or some wiring fault that has
produced a hard ground. In this case, the later condition
is probable . . .
| Quote: | I reversed the wires at the taxi light with the light filament wire
now going to the switch and the light housing wire going to ground.
The reversed filament wire was connected the the switch wire with a
clip wire and the ground wire was connected to gnd point without the
nav ground.
Everything worked- Taxi-Landing light and wig-wag
|
Yup, the fixture appears to have an internal ground connection
to one of the lamp terminals. The wire coming from the
lamp housing should go to local ground only. The free filament
wire now goes to the switch.
| Quote: | I then connected the wires for final connection using knife splices
and a ring terminal for the ground.
Hooked the battery back up and nothing works not even the landing
light. The fuses are not blown, the panel instruments and nav lights
work.
The flasher buzzes when the landing light is off and the Taxi light
switch moves through the middle position.
The only difference was hooking the nav ground back up at the same
time. I don't have enough knowledge to know if this could cause the
problem.
|
Assuming your switches are properly identified for
terminal connections (see Note 15 on page Z-9) then
the only thing that could prevent this system from working
as advertised is a wiring error. If your fixtures have
internal grounds, you need to make sure that same lead
goes to local ground . . . this should stop the fuse
blowing thing. I believe that flasher doesn't like to
be loaded on one output terminal only. BOTH switches need
to be in WW (mid position) for the flasher to function
as designed.
I think you have one or more wiring errors.
Bob . . .
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