Korry electrical circuit schematic question

[B747-400]

Hi Guys!

Hope you all had a good start into 2017!

As title says, maybe a dumb question .. but I've no good skills in reading electrical schematics! 

In my 747-400 OVHD panels are lot of Korry 434 1/2 x 1-Inch Type I indicators. Here is the electrical schematic:



What does the wave (red arrow) exactly means?

Thanks for your help!

Cheers
Hans

PS:
If you are interested in: more tech info about the indicator here:
http://www.esterline.com/controlandcommunication/Korry/OtherSwitchesIndicators/434Indicator.aspx

[KyleH]

That symbol is usually a fuse.

[B747-400]

Thanks, Kyle!

Interesting: one line with, another without fusing goes to the same lamps. Idea why?

Cheers
Hans

[bernard S]

hi bud..did you get these panels from Jeff ? before you go tearing into them there is a part number.. which korry is it.because these might be from old Everett sim

[B747-400]

Hi Bernard,

I got them all from UAM!They are mostly from United Airlines 747.

I've mainly two types as far as I recognized:

434-093-001
81590 9923
Type I

and

434-674-1031-2318
81590 0133

Cheers
Hans

[bernard S]

then as stated with triangle i assume x2 because of built in redundancy ..do you have schematic for each type ?

[B747-400]

This is imprinted on the indicator (same as schematic above):



Cheers
Hans