I pulled the driver's seat out last night after dragging my feet for far too long to address a couple things under the dash. The main one being the fact I need to run a wire for the new Progression Distributor being installed on the 400 being finished up. While under there getting some of the other stuff sorted, my A.D.D. got the best of me.

First question..currently the factory AM radio doesn't work. You can hear it power on, but nothing is being transmitted. I noticed it is not wired how it should be. The blue -rear speaker- wire is unhooked, but the 3 pin connector at the back has 2 SETS of green & white wires coming out, each being spliced together (G/W going to single speaker A, G/W going to single speaker B) to seemingly aftermarket speaker wires going to the rear. The yellow power wire is spliced into a white wire which goes into the radio at the top somewhere. I tried unhooking the yellow wire and plugging it into the back, per wiring diagram..but it wouldn't "pop" when turned on after doing that.


Second, the mirror map light, which has the wiring in the ceiling, evidently doesn't make it to the fuse box. For now, I went ahead and unplugged it. Im assuming though that it would have been a gray wire though that should have been visible from underneath, correct? I had the end plugged into the fuse box, and then another and which was zip tied to the harness..but nothing connecting the end that was zip tied to the wiring from the mirror. When I changed the mirror a while back, I was shocked to see the wiring was connected to the old mirror. Lazily, I just spliced into the old wiring with the new mirror..but I also thought it was already hooked up and the mirror/light itself was the issue.

Lastly, I cleaned up the wiring for my A/F gauge install. The power source is the "IGN" terminal in the fuse box. Knowing I need a 12 volt keyed source for the Progression Ignition, can I run a splitter and put both sources on the "IGN" terminal, or should I find something different for either? I don't plan on keeping the A/F gauge hooked up forever, but would like to keep it hooked up for a while after the engine is installed just to monitor.

Thanks.

 

It's likely the gray mirror map light wire doesn't make it to the fuse box because it doesn't connect to the fuse box (but I'm not 100% sure for the 1969 model year). It would have been a gray wire and it's not visible from underneath (if you're referring to underneath the dash). This is because the end of the wire connects (plugs into) to the Fisher wire harness behind the dash instrument cluster. I've reviewed the 1969 PIM diagrams and I don't see the same illustration(s) in 1969 (as I do in later years), but illustrations were often upgraded w/ more information on wiring looms connectors throughout the years. The wire (connector) from the Fisher wire harness is most often located on a fastener attached to the very upper left-hand side of the inside of the firewall (again, behind the instrument dash panel). The "connector" should be quite evident/visible (it's where the mirror map light wire connects to the Fisher wire harness). See if you can find that connector. I'm not making any assumptions the 1969 PIM diagram is same or different from 1972 (the image I display below), but the image (below) might provide some guidance on locating the mirror map light connector (and possibly the reason it doesn't connect into the fuse panel). Others w/ more familiarity w/ the 1969 mirror map light connector can provide better guidance. Good Luck.

Accessing electrical connection to map light/mirror on 1972 Cutlass Convertible