Joined: Mar 22, 2017 Posts: 301 Location: Great Mills, MD
Posted: Wed Jun 21, 2017 8:57 am Post subject: Best replacement for 14ga Prestolite in wiring harnesses
Wes,
From what I've found the current 14ga Prestolite wire (M13486 1-5) is rated for 90C and called out for MRAP vehicle production. This wire fits Douglas connectors well with an OD of 0.156 in. The best equivalent I've found on the automotive side is Polyurethane HDT in 14ga that has an OD of 0.153 in, but a little lower max temp rating of 80C.
Looking at Cross Linked wire the only thing close is SXL in 14ga, with an OD of 0.140 in. and max temp rating of 125C. Douglas connectors on this stuff will be a little loose. What I don't know is when military harnesses started using M13486 wire and if it holds up. I've got to dig up a harnesss made in the 50's and see what spec the wire is...........I'm assuming it's not MIL-C-13486......so maybe the current prestolite wire isn't so bad. What do you think?
I haven't given it much thought. I try to fabricate my new harnesses from the latest quality material I can find keeping the gauge the same and when OD of insulation isn't large enough for the Douglass connectors I build up the ends with heat shrink.
Have you looked up the 6145-00-705-6678 (H005-0812366) (15-C-2165-200) listing yet on google? They have several hits that offer a lot of spec info.
Technical Data | NSN 6145-00-705-6678
Characteristic Specifications
CONDUCTOR FORM--STRANDED SINGLE CONDUCTOR
MATERIAL--COPPER CORE CONDUCTOR SINGLE CONDUCTOR
MATERIAL DOCUMENT AND CLASSIFICATION--QQ-W-343,SOFT FED SPEC SINGLE MATERIAL RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
SURFACE TREATMENT--TIN CORE CONDUCTOR SINGLE CONDUCTOR
ROUND CONDUCTOR SIZE--12 AWG SINGLE CONDUCTOR
STRAND QUANTITY PER CONDUCTOR--19 SINGLE CONDUCTOR
STRAND AWG SIZE PER CONDUCTOR--25 SINGLE CONDUCTOR
VOLTAGE RATING--30.0 AC MAXIMUM RATED WORKING VOLTAGE SINGLE CONDUCTOR
CROSS-SECTIONAL SHAPE STYLE--6 ROUND
CROSS SECTION OUTSIDE DIAMETER--0.235 INCHES NOMINAL
MANUFACTURERS CODE--81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE--MIL-DTL-13486/1
MANUFACTURERS CODE--81349
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE--M13486/1-7
6145-00-705-6678 Datasheet
Conductor Form: Stranded single conductor
Cross Section Outside Diameter: 0.235 inches nominal
Cross-sectional Shape Style: Round
Material Document And Classification: Qq-w-343,soft fed spec single material response core conductor single conductor
Material: Copper core conductor single conductor
Round Conductor Size: 12 awg single conductor
Voltage Rating: 30.0 ac maximum rated working voltage single conductor
Strand Awg Size Per Conductor: 25 single conductor
Strand Quantity Per Conductor: 19 single conductor
Surface Treatment: Tin core conductor single conductor
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