Seville V8-273 4.5L (1989)
Fuse: All Technical Service Bulletins
Electrical - Trailer Wiring & Micro-Relays & Maxi Fuses
Bulletin No.
T-89-25
File in Group
8
Number
88
Corp. Ref. No.
818113
Date
Oct. 1988
SUBJECT:
1989 NEW PRODUCT INFORMATION - TRAILER WIRING HARNESSES, MICRO-RELAYS, AND MAXI
FUSES
MODELS AFFECTED: 1989 DE VILLES, FLEETWOODS, BROUGHAMS, ELDORADOS, SEVILLES, AND ALLANTES
Trailer Wiring Harnesses:
Trailer wiring harnesses 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 (-YT6) 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.
FIGURE 1 - MICRO RELAYS
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.
