Converting to ralley dash using a non-ralley harness
The harness can be used, you do have to switch the wires in the connectors and if you’re going from a standard to a rallye you will need to add the additional connector you don’t have.
The schematic I made is for going from a ‘74 Duster standard harness to a ‘68 or ‘69 barracuda rallye dash. On mine it was not quite as simple as just going like for like with the colors, I had to add the connector and splice those wires. And it definitely depends on the years being used because there were a few wires that used different colors depending on the year. The color of the brake wire and the gauge feed were the big ones that changed over the years, and of course the gauge feed is very important to get right. Most of the colors stayed the same throughput and just the locations changed. My schematic is specific to the years I used, although, it would be pretty close for other years too.
Bottom line is, you need the wire harness schematics for both cars you’re using, and go through to figure out what goes where.
I also converted my standard dash frame to accept my rallye gauges and modified the gauge cluster itself for my build. The conversion starts at post #18 in my build thread and goes on over the first couple pages My "new" '74 Duster- or why I need a project like a hole in the head
The harness can be used, you do have to switch the wires in the connectors and if you’re going from a standard to a rallye you will need to add the additional connector you don’t have.
The schematic I made is for going from a ‘74 Duster standard harness to a ‘68 or ‘69 barracuda rallye dash. On mine it was not quite as simple as just going like for like with the colors, I had to add the connector and splice those wires. And it definitely depends on the years being used because there were a few wires that used different colors depending on the year. The color of the brake wire and the gauge feed were the big ones that changed over the years, and of course the gauge feed is very important to get right. Most of the colors stayed the same throughput and just the locations changed. My schematic is specific to the years I used, although, it would be pretty close for other years too.
Bottom line is, you need the wire harness schematics for both cars you’re using, and go through to figure out what goes where.
I also converted my standard dash frame to accept my rallye gauges and modified the gauge cluster itself for my build. The conversion starts at post #18 in my build thread and goes on over the first couple pages My "new" '74 Duster- or why I need a project like a hole in the head
