Sale

Ignitions and Electrical› Wiring Harnesses

AMERICAN AUTOWIRE

70 MUSTANG CLASSIC UPDATE KIT

$1,149.00 $1,091.55 Save $57.45

SKU: A07L 510243

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The American Autowire 510243 Classic Update Wiring Harness is designed for 1970 Ford Mustang models (all body styles). This comprehensive kit rewires the entire vehicle, accommodating modern add-ons like EFI and aftermarket gauges, and features an updated ATC fuse panel, GXL wire, and original-replacement connectors. It requires a 1-wire internally regulated alternator and is not compatible with ammeters.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAMERICAN AUTOWIRE
Part NumberA07L 510243

Videos

Easiest way to update your resto-mod Mustang's wiring!

Easiest way to update your resto-mod Mustang's wiring!
American Autowire Classic Update - Engine & Front Light Harness Installation

American Autowire Classic Update - Engine & Front Light Harness Installation

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy