[joseph67]

Hello Everyone, Looking for help on finishing up my 67 firebird. here is what I got, Regimental Red 67, a/t,p/s,p/b,a/c AND a.i.r. Yep california emissions. With a 2 barrel rochester carb. The trans is a st300 2 speed of course. Im looking for answers on how the wiring for the a/c would go. For instance, the black with orange stripe wire ends up where? Some say at the blower motor but what I have is a purple wire from the relay. If someone could elaborate on this it would be great. Plus where does the resistor wire go? Im restoring the car back to original. Thank you for any help..

[johnta1]

Welcome to PY.



Here is some pics of the AC wiring. Not sure what you mean by resistor wire?

The Firebird Supplement would be a good item to get. It can explain a lot of the things you need.

[joseph67]

Thanks for the reply John, I talked to you about 5 years ago about this bird. It has the california emissions smog pump. Ive rebuilt just about everything on this car. Even finding brand new graphite shoes for the smog pump. Ive got the a/c supplement for 67 firebird but Im unsure about its configuration of wiring. On my bulkhead connector on the firewall all the wires are located like the diagram says however, the black with orange stripe says it goes to the blower. But the purple wire is there. The diagrams you sent I have thank you.. I just need to find out where the B+O stripe wire goes. Also, there is a resistor wire or Cloth wire I think it goes to the distributor? Again ty for the help I need it. Im in the process of repairing the broken kickdown switch. Then I think Im done. I'll get some pics out shortly. Thanks again

[johnta1]

Here's a schematic for the 67 Tempest, which probably isn't totally the same as the Bird, but it kind of explains the main stuff.

On the Bird wiring I think the Black-orange stripe wire goes to the relay assembly. From that relay the purple wire goes to the blower motor.
The other end of the black-orange stripe I think goes to the wiring loom by the alternator then to the alternator?

The resistor wire comes from the ignition switch to the coil.

[johnta1]

Forgot the pic

[joseph67]

OK, great info there. So the tempest wiring diagram Ive got as well. That diagram is being sold out there as 1967 firebird A/C wiring diagram. So this is exactly my problem. So what am I missing? On the tempest diagram, If you notice the black with orange stripe(bwos) wel'll call it comes out of the firewall connection and goes to the blower but not before it branches off to the relay. (I think this is where the power comes from) ? Or does power come from the wire with the inline fuse? On the first drawing you sent the purple wire to the blower comes from the relay. Im really confused. And embarrassed that I can't figure this out. Now if you see there is a double orange stripped black wire from the relay that goes to something called line connection? Then to the in line fused wire to alternator. This is on the tempest drawing. At this point Im pulling whats left of my hair line out of my skull. Which one do I follow? Im not sure. Hopefully we can figure this out. Ty

[Baron Von Zeppelin]

I'm going to suggest starting another title
And ask for
67 Bird AC wiring help - pics
in the Title.


The title you used is a very vague title in a specialized Early Firebird forum.
99% of posts are for granted about a 67 68 69 Pontiac Firebird
If you don't get the needed info - try another title.
Good luck Joseph

[johnta1]

That diagram is being sold out there as 1967 firebird A/C wiring diagram.

That might be the problem?
The A-body is off enough to screw anyone up.

I think the wire you have you need to see what gauge it is.
There seems to be two 'orange' wires for the Bird? (I think they are black with orange stripe maybe double orange on one)

One is 12 gauge and one is 18 gauge.
The 12 gauge goes from the relay assembly to a fuse then to alternator.
The 18 gauge goes from relay assembly to inside car to blower switch.

What gauge is your wire?

[joseph67]

I'll get some photos together and try and post them. I guess I should start with where does the a/c get its power from? Does power come from fuse block at inside firewall? I think it does. It should travel to the a/c relay on the evaporator box. When you switch on the a/c at the controller inside the car it energizes? This could all be wrong though Im not sure just speculating.

[johnta1]

This is a quick reply, would have to look at schematic again.
There are basically 2 power sources. One goes to the switch inside which just triggers the relay which the main power for the AC is used to power the compressor.


Also, need some one who actually has an AC Bird. The 67 Bird seems to be a one year only wiring setup?

[bobzdar]

Originally Posted by johnta1

This is a quick reply, would have to look at schematic again.
There are basically 2 power sources. One goes to the switch inside which just triggers the relay which the main power for the AC is used to power the compressor.


Also, need some one who actually has an AC Bird. The 67 Bird seems to be a one year only wiring setup?

I've got a '67 bird with a/c and AIR. It's a 400 car, but should be the same. I've removed the AIR pump (still have it) but the brackets are still on it as they hold the accessories. Let me know what you need there, all of the wiring is original afaik. Compressor is currently off as I'm replacing all of the lines.

[joseph67]

Hello, Thanks to both who responded to my post for wiring help. So I need help with a couple wire that are not connected. I have a Black with orange stripe wire thats located on the top right corner of the bulkhead connector. I think it goes to the relay on the a/c not sure though. And the cloth wire which is called out as"Tan" or "Peach" color. Ive read on the forum that it's a type of resistor wire and may even go to the distributor. Unsure though. Thank you for any help.

[joseph67]

Im trying to figure out the color coded wires are correctly routed. Ive got a black with orange stripe from th bulk head connector and not sure where it goes. Could you check yours?

[Pete67FB400]

My understanding is that the black/orange goes to the blower motor on non A/C cars and it is not used on A/C cars. My 67 with AC had it taped up and tucked away in the wiring tray at the top of the firewall.

[Squidward]

That cloth covered wire is likely the resistor wire that goes to the coil + terminal.

It has been a long time since I've seen a factory 67 FB ac harness. I would have to dig it out of the shed. But the blower motor gets a purple wire from the ac relay, and a black ground wire. The other relay wires are a small orange to the relay coil from the fan switch HI, big orange from the fused supply at the alternator, and black ground wire. The previously supplied diagram early in the thread is what I have, and IIRC, was accurate.

Concerning the black/orange: I have a diagram from the 67 supplement manual that shows black/orange as being from the starter R terminal to give full 12v to the coil + during start. This is a diagram for a 6 cyl, but it would likely be the same. My car went HEI decades ago, or else I would go out and look.

F bodies used a bypass wire from the starter R terminal to give full 12v to the coil + on cranking. A bodies used another terminal on the ignition switch to do this function.

So look for a fat purple wire going to the starter S, and what I think might be a black/orange attached to the starter R terminal.

[bobzdar]

Here are pics from my car, sorry for the late reply. This is the original wiring harness, 400 California AIR car with a/c.

Let me know if you need anything else, compressor is out for me to put new lines in.

[joseph67]

Thank to all who responded. Squidward could I get a clearer picture of the schematic you sent? Thanks