New Cessna voltage regulator harness for four wire systems with over voltage light and firewall mounted filter. Includes 18 AWG M27500-18TE1T14 Tefzel shielded wire superior to original Cessna specification with TYCO polyvinylidene fluoride shield terminations. "A" and "F" wires have TECHFLEX fiberglass sleeves to be positioned under the engine to help deflect heat(not required for rear mounted alternators). MS25171 boots are included for the noise filter and alternator "F" post. All wire ends are without terminals except for the firewall filter. I can crimp any terminals prior to shipping if you provide finished length. Early O-300 regulators are on the right firewall. 182 alternators are on the rear left side with regulator on left firewall. "A" and "F" wires are cut different lengths between these models based on differing component locations. "I" can be stowed under the panel for models without over voltage light. 177 Cardinals with alternator/regulator locations similar to the 172 can typically use the same harness. All sales PayPal or contact firstname.lastname@example.org 172 with forward alternator - $100 delivered. 172/O-300 and 182(6 cyl w/o sleeve.) - $90 delivered I use a 1/16 Allen key to remove old terminals from the connector. Sometimes it helps to push the old terminal in to help drive the locking lance down. Pulling the terminal out with the lance engaged will damage your connector. Note below the factory terminal insulation support wasn't crimped correctly. I found the right contact wire hanging by a few strands and the middle not much better. New terminal insulation support grips insulation to prevent conductor failure from vibration. The right contact shows a new contact with correct insulation support barrel for 18 awg wire.