When the standard servo wire isn't long enough to reach, you'll need these extension cables that come in a variety of sizes.
Items [17]
12" Aileron Servo Extension w/Gold Pins
Price: $6.97
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Product# HRC54604S

12" Servo Extension
Price: $3.99
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Product# JSP98030

6" Aileron Servo Extension w/Gold Pins
Price: $6.57
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Product# HRC54603S

TX/RX Audio Programming Cable
Price: $21.99
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Product# SPMA3081

TX/RX USB Programming Cable
Price: $28.99
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Product# SPMA3065

Hitec Extensions.
12" Aileron Servo Extension
Price: $5.97
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Product# HRC57345S

24" Aileron Servo Extension w/Gold Pins
Price: $8.97
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Product# HRC54605S

24" Aileron Extension
Price: $6.97
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Product# HRC57346S

36" Servo Extension
Price: $7.97
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Product# HRC57347S

Other Extensions.
Heavy-Duty Servo Extension 6"
Price: $5.99
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Product# SPMA3001

Servo Extension 9" Standard Gold
Price: $8.99
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Product# JRPA096

Heavy-Duty Servo Extension 12"
Price: $6.99
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Product# SPMA3003

Standard Servo Extension 12"
Price: $5.99
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Product# SPMA3053

18' Servo Extension Lightweight
Price: $3.99
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Product# EFLREX18L

Flap Servo Extension (305mm)
Price: $4.99
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Product# PKZ5404

Extension Leads Safety Knot, 10 Pcs Per Bag
Price: $7.99
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Product# MT4016

6" Servo Extension Cable
Price: $5.57
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Product# HRC57344S