73 Duster no brake lights.

I'm not sure what the exact wire routing is but both the 4x flasher, the signal flasher, and the brake light switch power should come off fuse(s) in the box.

According to my 74 manual WHICH MIGHT NOT BE THE SAME:

Look at the fuse chart, "cavity 7" and note that both 4x and stoplight are powered from that fuse. Power comes off the fuse in the partial diagram, wire X1-16R at the far left of the first diagram AND NOTE that it goes to a SPLICE. This is evidently (but might not be) a splice in the harness, and not at a connector, because the manner in which it's drawn indicates a splice.

From the splice follow D31-18P (pink) off to the right, you can see the corner of the flasher

Go to the next diagram, the wire coming to the left hand pin of the hazard flasher at the far left of the diagram is that wire, power coming INTO the 4x flasher

Now go back to the first diagram, at the fuse, to the splice, and follow the top right hand wire to the right, D3-18P and see that it feeds to the STOP LAMP SWITCH


So check that you have power at both sides of the fuses, and if you do at that point, I'd follow the harness and find that splice

The top two diagrams are the index and the pictorial for the bulkhead connector, which I thought might be helpful

Next is a pictorial of the fuse panel, and then the index of which powers what, and last excerpts from the two diagrams

View attachment BulkConnectL.jpg

View attachment BulkConnectR.jpg

View attachment FuseDiagcs.jpg

View attachment Fuses1cs.jpg

View attachment Fuses2cs.jpg

View attachment flasherL.jpg

View attachment flasherR.jpg