1976 Eldorado Convertible Power Seat Inoperative

[jdkskyking]

Help needed.

I have a 1976 Eldorado Convertible with a split bench seat with six way power.

The seat is Inoperative. I do not have power to the seat relay.

Can anyone tell me where the power originates from? It is supplied with a large Orange/Black wire.

I have found a relay in the engine compartment that is mounted on the right side of the firewall. It also has a Orange/Black wire attached. The Orange/Black wire does not appear to be powered but the relay does have power via a Redwire.

I have reviewed the maintenance manual and body manual but cannot find where the power originates. There is a circuit breaker in the fuse block that apparently powers the power seats.

Any help is greatly appreciated.
JK

[cadillactim]

Fusible link from starter to fuse box. Fuse box fuse to seat relay. If no power at fuse box fuse/circuit breaker, then check for bad fusible link. If power at fuse, check for broken wire to relay.

Tim

[jdkskyking]

It appears to me that there is a CB in the left fuse block that provides protection to several systems so I know the CB is good. I’m assuming there is a control wire from that CB that goes to a relay large enough to handle the load from the seats. Power must go to the seats from that relay. Then.... each seat has its own relay for operation.
I guess I need to check into the relay I found on the firewall.

Thanks for the feedback.
JK

[cadillactim]

The seats typically get power from the BODY fuse, which has power even with the key off. Never seen the seats get main power from a relay, that's what the individual relays under the seat are for, to carry the heavy current.

Tim

[jdkskyking]

The relay in engine compartment is for the AC blower motor.

I checked the power in and out of CBs in fuse panel to the left of the steering wheel column. All looked good.

I need to figure out where the wire runs to the seat area. May need to pull up the carpet to inspect.

I’m going to pull the seats and inspect what I can with seat mechanisim. I good cleaning is definately needed.

I did find a large ground wire that was not attached.

I could see a cut in one of the Orange/Black power wires.

These days I can only contort my body for a short period of time working under the dash...

Thanks again for the help.
JK