1800oldjunk
It is a chevy 305 cubic inch V8
What is the bolt pattern on a 1990 Cadillac Fleetwood brougham 350
No
The optional 5.7 engine used in the '90-'93 Cadillac Broughams is the Chevrolet 350.
To change the blower motor on a 1990 Cadillac DeVille, start by disconnecting the negative battery cable for safety. Remove the passenger side lower dash panel and locate the blower motor, which is typically found near the firewall. Disconnect the electrical connector and unscrew the motor from its housing, then replace it with the new unit. Reassemble the dash panel, reconnect the battery, and test the new blower motor to ensure it's functioning properly.
To replace the heater blower relay on a 1990 Cadillac Fleetwood Brougham, first disconnect the negative battery cable to ensure safety. Locate the relay, which is typically found in the fuse box under the dashboard or near the engine compartment. Remove the old relay by gently pulling it out, then insert the new relay in the same position. Finally, reconnect the battery and test the blower to ensure it operates correctly.
Fishing string
http://www.modifiedlife.com/1990-cadillac-brougham-car-radio-wire-guide/ this might help im having the same issue
Where is the ecm located on a 1990 cadilliac brougam
So whats the question WHY? Could be a bunch of things. How about checking the fuse first.
Voltage regulator is located inside of the alternator.