Rywire MT harness to AT harnesses
09-07-23, 05:29 PM
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Rywire MT harness to AT harnesses
Dear Rotary Gods,
I recently decided to replace my engine harness, which was a crispy stock automatic harness converted to a manual harness. I honestly didn't even notice it was an AT to MT conversion until after I started ripping the engine harness out. I quickly noticed the differences in the X-05 and X-14 connectors between the Rywire harness and the modified AT harness.
Does anyone have any experience on converting a manual Rywire harness to an automatic? I admittedly have a hard time following the FSM wiring diagram and it doesn't appear to help that the Rywire color coding doesn't appear to match the MT FSM diagrams. But it is entirely likely I am reading something wrong.
I spoke with Rywire and asked if they could convert my Rywire harness to automatic, and they stated they could if I sent them my X-14. However, they stated they would just "abandon all the transmission controls and just put the two automatic chassis connectors on the manual harness". That didn't sound right to me.
I have attempted to follow the amazing post below but the pins don't appear to match up on the Rywire harness so I am at a bit of a loss.
https://www.rx7club.com/3rd-generati...ersion-222574/
Any information is greatly appreciated.
I recently decided to replace my engine harness, which was a crispy stock automatic harness converted to a manual harness. I honestly didn't even notice it was an AT to MT conversion until after I started ripping the engine harness out. I quickly noticed the differences in the X-05 and X-14 connectors between the Rywire harness and the modified AT harness.
Does anyone have any experience on converting a manual Rywire harness to an automatic? I admittedly have a hard time following the FSM wiring diagram and it doesn't appear to help that the Rywire color coding doesn't appear to match the MT FSM diagrams. But it is entirely likely I am reading something wrong.
I spoke with Rywire and asked if they could convert my Rywire harness to automatic, and they stated they could if I sent them my X-14. However, they stated they would just "abandon all the transmission controls and just put the two automatic chassis connectors on the manual harness". That didn't sound right to me.
I have attempted to follow the amazing post below but the pins don't appear to match up on the Rywire harness so I am at a bit of a loss.
https://www.rx7club.com/3rd-generati...ersion-222574/
Any information is greatly appreciated.
Last edited by LAMEtHIng; 09-07-23 at 09:13 PM.
09-07-23, 05:37 PM
#2
the rywire harness would be treated the same as the factory one. the wire colors aren't what's important for any car ever. the pin position is what matters. colors change for various reasons from year to year (not specifically FD) so its not a reliable way to identify wires. so long as its the same equipment, the pin location will be consistent even if the wires were all 1 color. the write up in that link states the pin position, which you would reference the wiring manual for.
the easier solution would be to sell your current harness and buy another one if you don't want to fuss with it all. it should be pretty easy to sell a new rywire harness for most of what you paid for it
the easier solution would be to sell your current harness and buy another one if you don't want to fuss with it all. it should be pretty easy to sell a new rywire harness for most of what you paid for it
09-07-23, 05:45 PM
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Thanks fdauto, sorry I wasn't clear but I meant the colors just make things more confusing when attempting to track things back on the FSM and other posts. I realize electrons are blind, haha. There are also some pin positions in the Rywire that are empty but are listed in the post I sent along.
I did email Chris Ludwig about building me a harness but it would be a way out before he can start working on it. I am sure he is busy. I was just hoping someone may have a similar guide to the one I referenced on the first post but with a Rywire.
I did email Chris Ludwig about building me a harness but it would be a way out before he can start working on it. I am sure he is busy. I was just hoping someone may have a similar guide to the one I referenced on the first post but with a Rywire.
Last edited by LAMEtHIng; 09-07-23 at 08:32 PM.
09-07-23, 06:51 PM
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For posterity:
pin position 1 and 4 on the Rywire (listed as magnetic clutch a/p) are empty on the Rywire X-05 connector. Looking at page Z-28 on the FSM this appears to be related to AC. Seems weird that would be empty?
On the Rywire X-14 connector, pin position 5 (fuel thermo sensor) is empty.
pin position 1 and 4 on the Rywire (listed as magnetic clutch a/p) are empty on the Rywire X-05 connector. Looking at page Z-28 on the FSM this appears to be related to AC. Seems weird that would be empty?
On the Rywire X-14 connector, pin position 5 (fuel thermo sensor) is empty.
09-10-23, 01:05 AM
#5
Magnetic Clutch A/P is the Air Pump (smog pump) in the engine bay, many people remove that for single turbo conversions so I'm not surprised if it's unpopulated on the Rywire harness. Good job finding page Z-28, it does indeed get powered by the 15A fuse labeled 'Air Cond'. That same fuse also powers the AC relay (which sends power to the AC magnetic clutch), details on page Z-68 of the wiring diagram.
If you plan to keep the car manual I would look into modifying or replacing the chassis side connectors to match what would be on a manual transmission car. If you're running a standalone ECU, some of the transmission things like the 1-2 switch shouldn't be necessary. I think someone has posted details of all the X-05 connectors somewhere on this forum, those aren't spelled out clearly in the diagram. There is a 'common connector list' at pages Z-119 through Z-121 but those show wire colors and not wire functions. You would need to check each page of the earlier sections to see what the (AT) pins do on X-05, for instance. At a glance, it looks like X-05 and X-14 are physically different connectors between auto and manual cars. I would search the forums for both of those connector numbers and see what you can learn.
If you plan to keep the car manual I would look into modifying or replacing the chassis side connectors to match what would be on a manual transmission car. If you're running a standalone ECU, some of the transmission things like the 1-2 switch shouldn't be necessary. I think someone has posted details of all the X-05 connectors somewhere on this forum, those aren't spelled out clearly in the diagram. There is a 'common connector list' at pages Z-119 through Z-121 but those show wire colors and not wire functions. You would need to check each page of the earlier sections to see what the (AT) pins do on X-05, for instance. At a glance, it looks like X-05 and X-14 are physically different connectors between auto and manual cars. I would search the forums for both of those connector numbers and see what you can learn.
09-17-23, 05:56 PM
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Magnetic Clutch A/P is the Air Pump (smog pump) in the engine bay, many people remove that for single turbo conversions so I'm not surprised if it's unpopulated on the Rywire harness. Good job finding page Z-28, it does indeed get powered by the 15A fuse labeled 'Air Cond'. That same fuse also powers the AC relay (which sends power to the AC magnetic clutch), details on page Z-68 of the wiring diagram.
If you plan to keep the car manual I would look into modifying or replacing the chassis side connectors to match what would be on a manual transmission car. If you're running a standalone ECU, some of the transmission things like the 1-2 switch shouldn't be necessary. I think someone has posted details of all the X-05 connectors somewhere on this forum, those aren't spelled out clearly in the diagram. There is a 'common connector list' at pages Z-119 through Z-121 but those show wire colors and not wire functions. You would need to check each page of the earlier sections to see what the (AT) pins do on X-05, for instance. At a glance, it looks like X-05 and X-14 are physically different connectors between auto and manual cars. I would search the forums for both of those connector numbers and see what you can learn.
If you plan to keep the car manual I would look into modifying or replacing the chassis side connectors to match what would be on a manual transmission car. If you're running a standalone ECU, some of the transmission things like the 1-2 switch shouldn't be necessary. I think someone has posted details of all the X-05 connectors somewhere on this forum, those aren't spelled out clearly in the diagram. There is a 'common connector list' at pages Z-119 through Z-121 but those show wire colors and not wire functions. You would need to check each page of the earlier sections to see what the (AT) pins do on X-05, for instance. At a glance, it looks like X-05 and X-14 are physically different connectors between auto and manual cars. I would search the forums for both of those connector numbers and see what you can learn.
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