1984-1991 Cadillac El Dorado Radio Install

Wiring Instructions: The power and speaker wires needed to connect the new radio are attached to the connector of the wire harness located inside the vehicles dash. The Install Doctor STRONGLY recommends using an optional snap on wire harness that is specifically designed to snap into the vehicles dash wire harness connector. This will keep you from cutting the vehicles wires. This optional snap on wire harness will have wires on the opposite side of the connector that will allow you to splice these wires to the new radios wires. The only other option is to cut off the vehicles dash wire harness connector and splice the new radios wires directly to these wires. The optional snap on wire harness takes all the guess work out of trying to figure out what each wire is in the vehicles dash wire harness. The optional snap on wire harness tell you what each wire is.

Connect the GROUND wire of the new radio to the ground wire of a snap on wire harness OR crimp a ring terminal connector to this wire and screw the ring terminal to metal inside the vehicles dash.
Connect the +12 Volt Battery or Constant wire of the new radio to either the +12 Volt Battery wire of a snap on wire harness OR connect this wire to the +12 Volt Battery wire found in the wire chart above.
Connect the +12 Volt Ignition or Switch wire of the new radio to either the +12 Volt Ignition wire of a snap on wire harness OR connect this wire to the +12 Volt Ignition wire found in the wire chart above.
If your vehicle has a POWER ANTENNA connect the POWER ANTENNA wire of the new radio to either the POWER ANTENNA wire on a snap on wire harness OR wire in chart above.
Connect the LEFT FRONT speaker wires from the new radio to the LEFT FRONT speaker wires on a snap on wire harness OR the LEFT FRONT speaker wires found in the chart above.
Connect the RIGHT FRONT speaker wires from the new radio to the RIGHT FRONT speaker wires on a snap on wire harness OR the RIGHT FRONT speaker wires found in the chart above.
Connect the LEFT REAR speaker wires from the new radio to the LEFT REAR speaker wires on a snap on wire harness OR the LEFT REAR speaker wires found in the chart above.
Connect the RIGHT REAR speaker wires from the new radio to the RIGHT REAR speaker wires on a snap on wire harness OR the RIGHT REAR speaker wires found in the chart above.

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