It's easy enough, Cessna; remember - backup any file before you change it....

 

1). Copy all 6 files into FSX\effects directory. Job 1). Done
 

2). Using Notepad - open up the aircraft.cfg for the "problem" aircraft, probably your C172...

 

3). Browse down and find this section:-

[LIGHTS]
//Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit
light.0 = 3,  -2.76, -18.11, 2.97, fx_navred
light.1 = 3,  -2.78,  18.11, 2.95, fx_navgre
light.2 = 2,  -3.13, -18.31, 2.95, fx_strobe
light.3 = 2,  -3.11,  18.31, 2.95, fx_strobe
light.4 = 1, -20.51,   0.00, 6.20, fx_beacon
light.5 = 4,  -2.27,   0.00, 1.45, fx_vclight
light.6 = 5,  -2.00,  -9.20,  2.50, fx_landing     

 

4).   Add these three lines to the top of the list of lights:-

 

light.0 = 1,  0.00,  0.00,  0.00, ballast
light.1 = 2,  0.00,  0.00,  0.00, ballast
light.2 = 3,  0.00,  0.00,  0.00, ballast

 

...so that the [Lights] section will now look like this:-

 

[LIGHTS]
//Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit

light.0 = 1,  0.00,  0.00,  0.00, ballast
light.1 = 2,  0.00,  0.00,  0.00, ballast
light.2 = 3,  0.00,  0.00,  0.00, ballast
light.0 = 3,  -2.76, -18.11, 2.97, fx_navred
light.1 = 3,  -2.78,  18.11, 2.95, fx_navgre
light.2 = 2,  -3.13, -18.31, 2.95, fx_strobe
light.3 = 2,  -3.11,  18.31, 2.95, fx_strobe
light.4 = 1, -20.51,   0.00, 6.20, fx_beacon
light.5 = 4,  -2.27,   0.00, 1.45, fx_vclight
light.6 = 5,  -2.00,  -9.20,  2.50, fx_landing   

 

....... Now the (bold) light numbers are 0,1,2,3,0,1,2,3,4,5,6, right?  ...and that's wrong - there are now two "0",s, two "1"'s and two "2"'s - so we need to fix that - so all you do is to change the numbers after the word "light":

...... so that it now looks like this:-

 

[LIGHTS]
//Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit

light.0 = 1,  0.00,  0.00,  0.00, ballast
light.1 = 2,  0.00,  0.00,  0.00, ballast
light.2 = 3,  0.00,  0.00,  0.00, ballast
light.4 = 3,  -2.76, -18.11, 2.97, fx_navred
light.5 = 3,  -2.78,  18.11, 2.95, fx_navgre
light.6 = 2,  -3.13, -18.31, 2.95, fx_strobe
light.7 = 2,  -3.11,  18.31, 2.95, fx_strobe
light.8 = 1, -20.51,   0.00, 6.20, fx_beacon
light.9 = 4,  -2.27,   0.00, 1.45, fx_vclight
light.10 = 5,  -2.00,  -9.20,  2.50, fx_landing

 

 

That's all! Done!  You can do this for any aircraft that has it's lights configured in this way - OK?

oh OK thank you. and that's all that has to be done?