Rally Dash Wiring Harness Questions
Thank you Redfish and 67dart273 for your responses. I have tried to read as many of your older posts concerning wiring and value your knowledge. I will try to get better pics of cluster tomorrow. After rereading my original post I realized it is misleading.
I used the 1968 barracuda wiring diagram for the 8 dash cluster positions only at the cluster end. It was the only rally dash diagram I could find and your earlier posts state that the circuit boards haven't changed. I checked the Demon board and it is the same as 68 Barracuda....so the 8 wires have to be in the same place for the same function. Once I determined function and color, I used a combination of the 1971/1972 non-rally wiring diagrams
along with the burnt out old harness to verify the 8 wires went to the stated places. Most were easy and were the same as 1968 diagram (Dark blue at top of key goes to rear cluster as sender for fuel gauge)(Violet to Bulkhead R)(Gray to Bulkhead K)(Tan to Directional switch to Bulkhead V to directional switch)(Dark Blue w/tracer goes to Ignition to Bulkhead Box N)(Red to Bulkhead Y to High Beam Switch)(Light Green to Bulkhead S to Directional Switch)(Oranges tied together to Fuse Box).The last 3 make up the second dash cluster in rally dash. I saved the connector from the burnt 1971 harness as it was fine and moved it to 1972 harness.
The brake warning sender wire from the circular dash cluster goes to the parking brake switch to the Bulkhead. In 1968 the diagram says Box W. In 1972 the diagram says Box M. Following it in the 1972 non rally dash it goes to box M. I shouldn't have said the 1968 wiring diagram had an error...I meant that there was a change over those years. Box M is correct b/c as you said Redfish the other side of Box M is Low Brake Warning Switch. Thanks.
The position 10 wire that everyone refers to as the 12V power supply was not in the Non-rally dash. At least I couldn't find it. Sounds like I can put it into any power supply AFTER ignition. Correct? The dash should only get power after key is turned obviously. I see factory connections of smaller 18 gauge wire to larger 12 gauge in the harness....so I'm okay if I splice the 12V wire into larger gauge? Let me know what you find out Dart 273 if you look that up please, I'm not going to do it tomorrow.
Can someone tell me if there is a dash voltage regulator in a 1971 Demon rally dash....and if so where it is. I'm pretty sure I have one in my 68 Barracuda but I haven't had to take dash apart yet thankfully. The 1972 Non-rally harness has these blue connectors:
Are they the neutral safety back up switch? 1972 wiring diagram say they should be black. Only thing I can think that they are.
Does 1971 Demon have a back up/reverse light that goes on in dash somewhere when you put it manual trans in reverse? I have a chrome/plastic light on my 68 that seems like they abolished by 1972. If so, I will have to add it to the harness somehow. Thats enough for now...Thanks again for help and letting me bounce dumb questions off you
Thank you Redfish and 67dart273 for your responses. I have tried to read as many of your older posts concerning wiring and value your knowledge. I will try to get better pics of cluster tomorrow. After rereading my original post I realized it is misleading.
I used the 1968 barracuda wiring diagram for the 8 dash cluster positions only at the cluster end. It was the only rally dash diagram I could find and your earlier posts state that the circuit boards haven't changed. I checked the Demon board and it is the same as 68 Barracuda....so the 8 wires have to be in the same place for the same function. Once I determined function and color, I used a combination of the 1971/1972 non-rally wiring diagrams
along with the burnt out old harness to verify the 8 wires went to the stated places. Most were easy and were the same as 1968 diagram (Dark blue at top of key goes to rear cluster as sender for fuel gauge)(Violet to Bulkhead R)(Gray to Bulkhead K)(Tan to Directional switch to Bulkhead V to directional switch)(Dark Blue w/tracer goes to Ignition to Bulkhead Box N)(Red to Bulkhead Y to High Beam Switch)(Light Green to Bulkhead S to Directional Switch)(Oranges tied together to Fuse Box).The last 3 make up the second dash cluster in rally dash. I saved the connector from the burnt 1971 harness as it was fine and moved it to 1972 harness.
The brake warning sender wire from the circular dash cluster goes to the parking brake switch to the Bulkhead. In 1968 the diagram says Box W. In 1972 the diagram says Box M. Following it in the 1972 non rally dash it goes to box M. I shouldn't have said the 1968 wiring diagram had an error...I meant that there was a change over those years. Box M is correct b/c as you said Redfish the other side of Box M is Low Brake Warning Switch. Thanks.
The position 10 wire that everyone refers to as the 12V power supply was not in the Non-rally dash. At least I couldn't find it. Sounds like I can put it into any power supply AFTER ignition. Correct? The dash should only get power after key is turned obviously. I see factory connections of smaller 18 gauge wire to larger 12 gauge in the harness....so I'm okay if I splice the 12V wire into larger gauge? Let me know what you find out Dart 273 if you look that up please, I'm not going to do it tomorrow.
Can someone tell me if there is a dash voltage regulator in a 1971 Demon rally dash....and if so where it is. I'm pretty sure I have one in my 68 Barracuda but I haven't had to take dash apart yet thankfully. The 1972 Non-rally harness has these blue connectors:
Are they the neutral safety back up switch? 1972 wiring diagram say they should be black. Only thing I can think that they are.
Does 1971 Demon have a back up/reverse light that goes on in dash somewhere when you put it manual trans in reverse? I have a chrome/plastic light on my 68 that seems like they abolished by 1972. If so, I will have to add it to the harness somehow. Thats enough for now...Thanks again for help and letting me bounce dumb questions off you
