Landing light wire in cowl--anything special?

[TangoWhiskey]

My friend owns a Cherokee 235. The landing light wire needs to be replaced. The light is intermittent due to a bad wire (diagnosed last night). The wire comes out of the firewall, goes through a quick-disconnect, then is bonded down the firewall side of the bottom cowl, then forward to the front of the cowl along the bottom center of the bottom cowl.

Question: Is some special kind of wire used that can withstand the heat of the engine compartment? The wire had a braided ground and a multi-stranded power wire.

(Note: this question is for educational purposes only. My friend will have his mechanic replace the wire.)

 

[wsuffa]

My friend owns a Cherokee 235. The landing light wire needs to be replaced. The light is intermittent due to a bad wire (diagnosed last night). The wire comes out of the firewall, goes through a quick-disconnect, then is bonded down the firewall side of the bottom cowl, then forward to the front of the cowl along the bottom center of the bottom cowl.

Question: Is some special kind of wire used that can withstand the heat of the engine compartment? The wire had a braided ground and a multi-stranded power wire.

(Note: this question is for educational purposes only. My friend will have his mechanic replace the wire.)

Get aviation-grade teflon insulated wire from somebody like Aircraft Spruce.

Troubleshooting the landing light wiring is permitted as preventative maintenance.

Wires rarely fail themselves, unless they are constantly under flex. Usually a connector or disconnect goes bad.

 

[gismo]

Get aviation-grade teflon insulated wire from somebody like Aircraft Spruce.

Troubleshooting the landing light wiring is permitted as preventative maintenance.

Wires rarely fail themselves, unless they are constantly under flex. Usually a connector or disconnect goes bad.

Even the teflon insulated wire will suffer if it's too close to the exhaust, but any other under cowl temp shouldn't faze it. All wires do need to be secured fairly often in the engine compartment because there's plenty of wind blowing through there and it can wiggle anything loose until it breaks.

 

[Graueradler]

On Cherokees where the light is mounted in the center of the induction filter, the wire feed through is a bypass to the filter if not sealed.