What wire colors are on the cruise-only clockspring harness connector?

Black (Ground), Yellow/Light Blue Stripe (Horn), Black/Violet Stripe (Chime when Key In Ignition), and Blue/Black Stripe (Cruise).

What wire colors are on the plug under the dash that mates to the clockspring?

Black/Violet Stripe (Chime when Key In Ignition), Light Blue/Black Stripe (Cruise), Green/Orange Stripe (Ground), and Dark Blue x 2 wires (Horn).

Which wire is the horn circuit on the under-dash plug?

The horn circuit at the under-dash plug uses Dark Blue x 2 wires; on the clockspring harness side the horn wire is Yellow/Light Blue Stripe.

Which wire carries the key-in-ignition chime signal?

On both the clockspring harness and the under-dash plug, the chime-when-key-in-ignition circuit is the Black/Violet Stripe wire.

What is the ground wire color at the under-dash plug versus the clockspring harness?

Ground is Green/Orange Stripe at the plug under the dash and plain Black on the clockspring harness.

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1999 Mercury Grand Marquis Cruise-Only Clockspring Wiring Pinout Diagram

Clockspring harness and under-dash plug connector pinout: horn, cruise, chime and ground wire colors

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Connector face diagrams for a clockspring harness and under-dash plug listing terminal functions (horn, cruise, chime, ground) with their wire color codes.

AI caption December 2016 · Photo 1433 of 1442

This document is a hand-made wiring/pinout reference showing two four-pin connectors related to a steering-wheel clockspring installation, apparently for a cruise-control-only (non-redundant-controls) setup. The left diagram, outlined in red and labeled "Clockspring Harness," shows the connector on the clockspring side with four circuits and their wire colors: Ground (Black), Horn (Yellow/Light Blue Stripe), Chime when Key In Ignition (Black/Violet Stripe), and Cruise (Blue/Black Stripe). The right diagram, labeled "Plug Under Dash," shows the mating vehicle-side connector under the dash with the corresponding circuits: Chime when Key In Ignition (Black/Violet Stripe), Cruise (Light Blue/Black Stripe), Ground (Green/Orange Stripe), and Horn (Dark Blue x 2 wires). Pin positions are drawn schematically within each connector outline so a reader can match each cavity to its function and wire color on both sides of the connection. A reader can use this to identify which wire performs which function when swapping or wiring a clockspring for cruise control, horn, key-in-ignition chime, and ground on the associated vehicle. The document itself contains no year, make, model, or part number information; the vehicle attribution comes from the uploader's gallery (1999 Mercury Grand Marquis).

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Frequently asked questions

What wire colors are on the cruise-only clockspring harness connector?: Black (Ground), Yellow/Light Blue Stripe (Horn), Black/Violet Stripe (Chime when Key In Ignition), and Blue/Black Stripe (Cruise).
What wire colors are on the plug under the dash that mates to the clockspring?: Black/Violet Stripe (Chime when Key In Ignition), Light Blue/Black Stripe (Cruise), Green/Orange Stripe (Ground), and Dark Blue x 2 wires (Horn).
Which wire is the horn circuit on the under-dash plug?: The horn circuit at the under-dash plug uses Dark Blue x 2 wires; on the clockspring harness side the horn wire is Yellow/Light Blue Stripe.
Which wire carries the key-in-ignition chime signal?: On both the clockspring harness and the under-dash plug, the chime-when-key-in-ignition circuit is the Black/Violet Stripe wire.
What is the ground wire color at the under-dash plug versus the clockspring harness?: Ground is Green/Orange Stripe at the plug under the dash and plain Black on the clockspring harness.