For 1990-2009 cars

# 1989 NEW PRODUCT INFORMATION TRAILER WIRING HARNESS

#### MODELS AFFECTED: 1989 DE VILLES, FLEETWOODS, BROUGHAMS, ELDORADOS, SEVILLES, AND ALLANTES

#### Trailer Wiring Harnesses:

Trailer wiring hamesses are available from GM Service Parts Operations, parts group 7.068, for 1989 Cadillac vehicles as indicated below. It is recommended that these trailering harnesses be used any time it is necessary to connect trailer wiring to one of these vehicles.

P/N P/N To Trailering Model To Car Trailer Capacity Comments ----- ------ ------- ---------- -------- Brougham 12063385 2987124 5000 lbs. See notes 1 & 2 DeVille 20652621 2987124 1000 lbs. Eldorado 12085124 2987124 1000 lbs. See note 3 Seville 12085124 2987124 1000 lbs. See notes 3 & 4 Allante N/A N/A 0 lbs. See note 5

#### NOTES:

----- 1. Wiring harness included with V92 Trailering Provisions.

2. V92 Trailering Provisions required for 5000 lb. capacity.

3. Harness will require two P/N 1626239 relays.

4. No trailering harness is available for Seville STS (YP6) due to unique rear lamp treatment. Contact Cadillac Technical Assistance for information on STS trailer wiring.

5. Trailer towing is not recommended on Allante.

Parts are currently available from GMSPO.

#### Micro-Relays:

The 1989 Cadillac Eldorados and Sevilles will make use of a new relay. The new relay, referred to as a "Micro-relay", is smaller than the current "ISO" relay, refer to Figure 1, and will become a widely-used part within the next few model years.

On the 1989 Eldorados and Sevilles, Micro-relays are used for the "Twilight Crank" relay and the "Courtesy Lamps" relay. The Micro-relays are taped to the instrument panel wiring channel, just to the driver's side of the Interior Relay Center. The Twilight Crank relay is located above the Courtesy Lamps relay.

Micro-relays are cuffently available from GM Service Parts Operations as identified below:

Part Part P/N Group Description --- ------ ----------- 12065118 2.480 Relay - Micro

#### Maxi Fuses:

On the 1989 Allante the fusible links located near the battery have been replaced by a new circuit protection device, the Maxi Fuse, refer to Figure 2.

The Maxi Fuse is very similar to a standard Auto Fuse. The major differences are the physical size and the amperage capacity. The Maxi Fuses are located in a small covered fuse block above the battery, refer to Figure 3. They may be serviced by unplugging them from the fuse block and installing a new part.

The Allante uses eight Maxi Fuses. Most of the Maxi Fuses function similar to fusible links in that they supply high power circuits which are then protected by smaller Auto Fuses. Table 1 summarizes the circuits supplied by each Maxi Fuse. Table 2 lists Maxi Fuse part numbers, amp capacity and color.

For warranty purposes use Labor Operation N1720 at .2 hour for replacement of Maxi Fuses.

Maxi-Fuse Number Amps Circuits Protected --------- ---- ------------------ 1 20 Anti-Lock Braking System 2 20 Fuse 1 Fuse 2 Fuse 3

3 20 Fuse 8 Fuse 9

4 20 ECM Battery Input PASS KEY Theft Deterrent

5 40 Trunk Pull Down A/C Blower Motor

6 30 OSM #6, 7, and 13

7 60 Rear Fuse Panel OSM #2, 3, 4, 5, 9, and 10

8 20 Power Antenna Bose Amplifiers Cellular Telephone In-Line Fuse

Table 1 - Maxi Fuse Usage

Maxi Fuse Rating (Amps) Color P/N ------------- ----- ---

20 Yellow 12065931 30 Light Green 12065932 40 Orange 12065933 60 Blue 12065935

Table 2 - Maxi Fuse Part Numbers

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.