'67 blower motor wiring (A/C car)

[Larry S.]

I was getting ready to replace my A/C blower motor when I noticed that the black wire wasn't connected to the motor flange; I connected it but the motor still doesn't turn. I noticed an orange wire near the motor that goes nowhere; its harness comes out of the firewall on the driver's side, runs to the passenger side, splits about 3" inboard from the hood catch (the other wires go to an unseeable place underneath), and the orange wire is folded back on itself 2-3 times and taped. It has a black round female connected on its end.

I looked at the wiring diagram in the repair manual, and it shows an orange wire going to the blower motor. There is already another wire connected to the blower motor, leaving no other connections, so where does this orange wire go? Finally, the motor I bought from LI Corvette has only one connection on it (male); how can a motor run with only one connection? Don't you need power and ground?

Finally (this time for real), can you really remove this motor by just moving the radiator overflow tank to the side? Seems too tight to me.

[John H.]

Re: '67 blower motor wiring (A/C car)

Larry -

The orange wire that's taped back is the standard (heater) blower wire, which isn't used on an A/C car - it's folded over and taped back to the harness. If the replacement blower motor doesn't have a ground spade connection on it, you'll have to add one under one of the blower flange-to-blower case screws. This is shown in the '67 Assembly Manual, Section C60, Sheet E1. The A/C harness has its own connectors for the blower, blower relay, blower resistor, etc.

[Larry S.]

Re: '67 blower motor wiring (A/C car)

John, it seems I might be better off having my old motor rebuilt; any suggestions? Also, do you know if the motor will really come out of that tight space after moving the radiator overflow tank aside? The shop manual says there are five screws attaching the motor flange to the case; can you get to them? Thank you.

[Jim T.]

Re: '67 blower motor wiring (A/C car)

Larry my 70 is a few years newer than your air conditioned 67, however the orange wire you mentioned is used on my 70 for the high speed blower function when using the air conditioner. The other end of the wire from the plastic fuse holder (30 type fuse) connects to a terminal on the horn relay mounted to the inner fenderwell. The plastic fuse holder piece has a red wire that connects to the horn relay although the cap for the fuse holder has orange wiring.

[Robert B.]

Re: '67 blower motor wiring (A/C car)

Larry -

I'm going to attempt to replace the blower motor in my 67 A/C car this Friday as I'm driving it across country and my old motor has a bad bearing. I'm told that it will come out after moving the A/C hoses out of the way, and removing the overflow tank. If you get to it first, please let me know how it goes, and I'll do the same.

Regards,

Bob

[Larry S.]

Re: '67 blower motor wiring (A/C car)

Will do, Bob. Looking at it, it seems like trying to get a 7" piece through a 3" hole, though. I'm going to start tomorrow evening and hope I don't learn any new cuss words! Do you have a replacement motor that you have to install a power connection on? I wish they'd tell you this before you order the motor. Larry

[Robert B.]

Re: '67 blower motor wiring (A/C car)

Will do, Bob. Looking at it, it seems like trying to get a 7" piece through a 3" hole, though. I'm going to start tomorrow evening and hope I don't learn any new cuss words! Do you have a replacement motor that you have to install a power connection on? I wish they'd tell you this before you order the motor. Larry

Larry -

I ordered a new motor from Long Island Corvette - it has on it's label "A/C Delco 88891584 05124 - Made In Canada.

The motor has a single male spade connector for power, and ground as I recall is provided through another spade lug which is attached to one of the mounting screws.
In addition, there is a hole in the motor housing which, when installed, points downward. It appears that this hole is connected to a rubber "duct" - it looks like it provides airflow through the motor when the blower is running. Someone else might be able to clarify it's function.

Bob

[Larry S.]

Re: '67 blower motor wiring (A/C car)

Bob, my motor has a different suffix--it's 05101 instead of 05124--otherwise, the motor has the same label as yours. Since we both have A/C '67's, I wonder what the difference is. Also, the hole in my existing motor is about1 1/2" to the right of the connection (looking from the back of the motor instead of the fan side), and on the replacement the hole is about 1" to the left of the connection. I don't think the rubber hose will reach the hole. What do your motors look like? Larry

[Robert B.]

Re: '67 blower motor wiring (A/C car)

Larry -

Here are pictures of my motor - hope that helps - it looks identical to the motor in another '67 A/C car. Does it look like the original motor in your car?

Bob

[Larry S.]

Re: '67 blower motor wiring (A/C car)

That looks just like my motor. Does you existing motor have the air tube hole on the other side of the electrical connection? Also, do you have a hot wire connection anywhere on the new motor? Mine just has a ground connection, so how do I get power to the motor? Thanks.

[Robert B.]

Re: '67 blower motor wiring (A/C car)

Hi Larry -

Yes, the existing motor has the air tube in the same location as the new motor. The spade connector that you see on the motor is the hot lead. The ground is made where the motor is mounted to the car. Here is a picture of the original motor in my other '67 coupe. You can see the air tube, the hot connection to the motor , and the ground connection at the motor mounting screw.

Bob

[Larry S.]

Re: '67 blower motor wiring (A/C car)

Thank you, Bob; a picture is just what I needed. The motor on you car looks exactly like the replacement motor I have, but it doesn't look like the one on my car. The one on my car has the rubber air tube on the other side of the power connection.

I found out tonight that the radiator overflow tank has to be removed, not just 'pushed to the side', as the repair manual states. That neccessitates removing the hose at the 'Tee' under the tank. That's as far as I got. I can't imagine that I can reach the five attaching screws to actually remove the motor. Worse than that is going to be trying to put the screws back in. Why don't you do yours first and give me instructions!