Wiring for sequential injection
#1
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I'm currently finishing up my 1.8 into 91' swap. I sold the 1.6 as a whole, so I'm using everything 1.8 - ignitors, injector harness, etc.
The 1.8 injector harness already has individual signal for each injector. Eventually I'll be using sequential injection, so I want to keep the individual signal wires for the injectors.
I looked at the wiring diagram and it looks like I can just use 1 wire from the ignitor and 1 wire from the purge solenoid valve (removed it).
TLDR: look at the diagrams and tell me if it'll work:
stock 91 wiring:
![](http://s95367906.onlinehome.us/photo/mt.net/injectors-before.png)
what I want to do (1.8 ingitors, no purge valve, 1.8 injector harness):
![](http://s95367906.onlinehome.us/photo/mt.net/injectors-after.png)
(ignore the ingitor, i didn't bother to photoshop the connections but it's obvious)
The 1.8 injector harness already has individual signal for each injector. Eventually I'll be using sequential injection, so I want to keep the individual signal wires for the injectors.
I looked at the wiring diagram and it looks like I can just use 1 wire from the ignitor and 1 wire from the purge solenoid valve (removed it).
TLDR: look at the diagrams and tell me if it'll work:
stock 91 wiring:
![](http://s95367906.onlinehome.us/photo/mt.net/injectors-before.png)
what I want to do (1.8 ingitors, no purge valve, 1.8 injector harness):
![](http://s95367906.onlinehome.us/photo/mt.net/injectors-after.png)
(ignore the ingitor, i didn't bother to photoshop the connections but it's obvious)
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I have a 1.6 and I'm hoping to use the Y and Z pins although your schematic shows pin Z as being used for the transmission?
I assume that the harness on my car doesn't have wires for these pins so I headed down to pick a part and pulled the loom out of a Subaru legacy, it uses the same 76 pin connector as my DIYPNP so I can fit the Y and Z wires from this plug and could make a custom loom with the extra plugs.
The wires on these pins from the Subaru loom look to be heavy enough for injectors.
Interestingly the manual I have shows that Californian models use pins Y and Z for sequential injection.
I assume that the harness on my car doesn't have wires for these pins so I headed down to pick a part and pulled the loom out of a Subaru legacy, it uses the same 76 pin connector as my DIYPNP so I can fit the Y and Z wires from this plug and could make a custom loom with the extra plugs.
The wires on these pins from the Subaru loom look to be heavy enough for injectors.
Interestingly the manual I have shows that Californian models use pins Y and Z for sequential injection.
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I worked on the MS wiring harness and my car doesn't have wires the Y and Z pins.
Good idea on the Subaru harness, if you figure out how to pull the pins out. My car is a 91 though. California edition is what, 93?
Good idea on the Subaru harness, if you figure out how to pull the pins out. My car is a 91 though. California edition is what, 93?
#6
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(zack morris's phone)
Correct 93 CA 1.6Ls came with seq. Fuel.
Originally Posted by giblets
I have a 1.6 and I'm hoping to use the Y and Z pins although your schematic shows pin Z as being used for the transmission?
I assume that the harness on my car doesn't have wires for these pins so I headed down to pick a part and pulled the loom out of a Subaru legacy, it uses the same 76 pin connector as my DIYPNP so I can fit the Y and Z wires from this plug and could make a custom loom with the extra plugs.
The wires on these pins from the Subaru loom look to be heavy enough for injectors.
Interestingly the manual I have shows that Californian models use pins Y and Z for sequential injection.
I assume that the harness on my car doesn't have wires for these pins so I headed down to pick a part and pulled the loom out of a Subaru legacy, it uses the same 76 pin connector as my DIYPNP so I can fit the Y and Z wires from this plug and could make a custom loom with the extra plugs.
The wires on these pins from the Subaru loom look to be heavy enough for injectors.
Interestingly the manual I have shows that Californian models use pins Y and Z for sequential injection.
#7
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I sacrificed one of my Subaru connectors to demonstrate how to remove the pins in case anyone is interested:
pictures of the plugs and the larger type of pin:
![](http://crash.ihug.co.nz/~rsmith/Connector.jpg)
Cutaway of how to remove the pin: I haven't removed any of the smaller pins because I don't need to and I have both the 12 and 16 pin connectors with heaps of these anyway:
![](http://crash.ihug.co.nz/~rsmith/Removal.jpg)
The tool that I used is a little screwdriver of the type you might use for repairing glasses.
pictures of the plugs and the larger type of pin:
![](http://crash.ihug.co.nz/~rsmith/Connector.jpg)
Cutaway of how to remove the pin: I haven't removed any of the smaller pins because I don't need to and I have both the 12 and 16 pin connectors with heaps of these anyway:
![](http://crash.ihug.co.nz/~rsmith/Removal.jpg)
The tool that I used is a little screwdriver of the type you might use for repairing glasses.
Last edited by giblets; 03-29-2011 at 05:20 PM. Reason: clarification of tool
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