What are the pinouts for the horn relay?

Cavity 30 is internal fused B(+); cavity 85 is the horn relay control on circuit X3 20BK/RD; cavity 86 is fused B(+) on A7 10RD/BK; cavity 87 is the horn relay output on X2 20DG/RD.

What wire color is the rear window defogger relay control circuit?

The rear window defogger relay control is circuit C81, a 20-gauge light blue/white (LB/WT) wire on cavity 85.

Which cavity is the cigar lighter relay output on?

Cavity 87, circuit F30, a 16-gauge red (RD) wire, is the cigar lighter relay output.

What powers cavity 86 of the cigar lighter relay?

Cavity 86 receives fused ignition (RUN-ACC) power via circuit A31, a 12-gauge black/white (BK/WT) wire.

What is listed for the spare relay cavities?

The spare relay table lists cavities 30, 85, 86, 87 and 87A, but no circuits or functions are assigned to any of them.

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Jeep Wrangler Relay Pinout Chart - Cigar Lighter, Horn & Rear Defogger Relays

Relay cavity charts for cigar lighter, horn, rear window defogger, and spare relays

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Relay terminal pinout tables defining cavities 30/85/86/87 with circuit IDs and functions for the cigar lighter, horn, and rear window defogger relays.

AI caption December 2007 · Photo 162 of 394

This document is a relay pinout reference chart consisting of four tables, each listing relay cavity (pin) numbers, the associated circuit designation with wire gauge and color code, and the function of each terminal. The Cigar Lighter Relay table shows cavity 30 as internal fused B(+), cavity 85 grounded via circuit Z1 14BK, cavity 86 fused ignition (RUN-ACC) via A31 12BK/WT, and cavity 87 as relay output on F30 16RD. The Horn Relay table shows cavity 30 internal fused B(+), cavity 85 as horn relay control on X3 20BK/RD, cavity 86 fused B(+) on A7 10RD/BK, and cavity 87 as horn relay output on X2 20DG/RD. The Rear Window Defogger Relay table shows cavity 30 fused B(+) on A4 12BK/PK, cavity 85 as relay control on C81 20LB/WT, cavity 86 fused ignition (RUN) on L5 20BK, and cavity 87 as relay output on C15 12BK/WT. A fourth table for a Spare Relay lists cavities 30, 85, 86, 87 and 87A with no circuit or function assignments. This chart lets a reader identify wire colors and terminal functions when diagnosing cigar lighter, horn, or rear defogger relay circuits.

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Frequently asked questions

What are the pinouts for the horn relay?: Cavity 30 is internal fused B(+); cavity 85 is the horn relay control on circuit X3 20BK/RD; cavity 86 is fused B(+) on A7 10RD/BK; cavity 87 is the horn relay output on X2 20DG/RD.
What wire color is the rear window defogger relay control circuit?: The rear window defogger relay control is circuit C81, a 20-gauge light blue/white (LB/WT) wire on cavity 85.
Which cavity is the cigar lighter relay output on?: Cavity 87, circuit F30, a 16-gauge red (RD) wire, is the cigar lighter relay output.
What powers cavity 86 of the cigar lighter relay?: Cavity 86 receives fused ignition (RUN-ACC) power via circuit A31, a 12-gauge black/white (BK/WT) wire.
What is listed for the spare relay cavities?: The spare relay table lists cavities 30, 85, 86, 87 and 87A, but no circuits or functions are assigned to any of them.