Cadillac

1990 cadillac: coupe..one out of a 91 deville 4 door..jump..trunk lid…

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i have a 1990 cadillac...
i have a 1990 cadillac coupe deville, the rear deck lid motor controler was missing. went to pick and pull got one out of a 91 deville 4 door, installed it on the vehicle. had to jump the orange and black wire with power from the battery, the motor worked after shutting trunk lid. when the trunck lid is shut the open trunk light comes on. the... Read full answer
i have a 1990 cadillac coupe deville, the rear deck lid motor controler was missing. went to pick and pull got one out of a 91 deville 4 door, installed it on the vehicle. had to jump the orange and black wire with power from the battery, the motor worked after shutting trunk lid. when the trunck lid is shut the open trunk light comes on. the green wire goes to the dummy light. need to know were start to find were i'm loosing power for the orange and black wire that goes to motor switch, and how to get the dummy light that only comes on when the trunck lid is closed
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Answered in 17 hours by:
12/13/2011
Mike S.
Mike S., ASE Certified Technician
Category: Cadillac
Satisfied Customers: 8,610
Experience: ASE certified
Verified

First of all, lets compare the 2 wiring diagrams, click here and here.

Is this wiring correct?

graphic

Mike S.
Mike S., ASE Certified Technician
Category: Cadillac
Satisfied Customers: 8,610
Experience: ASE certified
Verified
Mike S. and 87 other Cadillac Specialists are ready to help you
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What are all the parts from the 1991?

I see that the motor for each is the same as well as the switch. the only thing I see different is the actuator, but I don't know if that is even part of what you replaced.

graphic

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Customer reply replied 7 years ago
i replace the hole actuator assy. from a 91 coupe deville. the twenty amp fuse on the 90 deville is the right one need to know were the 20 amp fuse is located. in the trunk or what if i have to i will get a complete 1990 deville actuator assy.

The 20a fuse is in the relay center. Engine compartment

graphic

Engine compartment fuse center locations—1990–91 Deville

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