Cessna Voltage Regulator Harness and Power Cables

Michael Denman

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Jul 11, 2016
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Mike Denman
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 mwdg3@yahoo.com

172 with forward alternator - $100 delivered.
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172/O-300 and 182(6 cyl w/o sleeve.) - $90 delivered
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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.

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The right contact shows a new contact with correct insulation support barrel for 18 awg wire.
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Cessna 172 complete power cable kit for 1972 model includes battery positive 4awg 8", battery ground 4awg 15", alternator power 8awg shielded 80" /heat sleeve, alternator ground 8awg 54" /heat sleeve, battery relay to starter relay 4awg 14", starter relay to starter-4awg 32" /heat sleeve, battery relay to ground service relay 2awg 15" and ground service relay to receptacle 2awg 12". Breaker end of the alternator cable is not terminated to ease routing thru the firewall. One 8awg terminal for #8/10 screw included. I can crimp this terminal on request.

$250 delivered CONUS. Paypal or contact mwdg3@yahoo.com

Our power and starter cables begin with MIL-C-27500 shielded Tefzel and MIL-C-22759 unshielded Tefzel cables. We use Burndy's aircraft rated heavy YAV lugs forward of the firewall and more manageable AMP Solistrand terminals behind the panel. To improve durability we apply Raychem epoxy lined heat shrink for insulation support. Shields are terminated with polyvinylidene fluoride Raychem S01 -05-R solder sleeves and AMP PIDG ring terminals. MS25171 boots are also included to protect various terminals. Techflex fiberglass sleeve installed over alternator and starter cables is a cost effective way to ward off heat damage to cables routed under engines and/or exhaust tubes.

Other models and individual cables available on request. Contact us with your make, model and serial number so we can work with you to determine correct wire size, length and lug. Customer provided dimensions are always helpful as factory schematics don't always provide length and lug size.

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The voltage regulator connector is the same. I can build any power cable you need. Email me, or have your mechanic contact me with specific needs.
 
Landing light harness for 172L with locking quick disconnect connector. 10 awg with nylon spiral wrap. Contact me with specs for your model.
$75.

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Plane Power voltage regulator harness with indicator wire for Cessna 4 cylinders. $100 delivered

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I've added several options for 172, $325 includes the following:
Battery Positive - 4awg 8"
Battery Ground - 4awg 15"
Engine Ground Braid - 4awg 7"
Alternator Power - 8awg shielded 80" /heat sleeve
Alternator Ground - 8awg 54" /heat sleeve
Battery Relay-Starter Relay - 4awg 14"
Starter Relay to Starter - 4awg 32" /heat sleeve
Battery Relay-EXT Relay - 2awg 15"
EXT Relay - Receptacle - 2awg 12"
AMM-Starter Relay - 8awg 66"
AMM-BUS - 8awg 40"
Battery Relay Suppression Diode

Cessna 182K complete power cable kit - $350
Battery Positive - 2awg 8"
Battery Ground - 2awg 11"
Alternator Power - 8awg shielded 56"
Alternator Ground - 8awg 22"
Battery Relay-Starter Relay - 2awg 180"
Starter Relay to Starter - 2awg 10"
Battery Relay-Ext Relay - 2awg 15"
EXT Relay- Receptacle - 2awg 12"
AMM-BUS - 8awg 31"
AMM-Starter Relay - 8awg 57"
Battery Relay Suppression Diode
Associated Relay Post Boots

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Hi...i am a new user here. I too had a Zeftronics voltage regulator installed a couple of years ago and the AP had a bear of a time getting it to work. I don't know what all he did, but I think flashing the generator was involved, along with several calls and a visit to the company. Lucky I live only a few miles from where the Zeftronics regulator is made, so the visit wasn't a big issue.
 
Updated my for sale page. New adaptor harnesses for converting later model Cessna's to Plane Power.

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