Getting close, a few more that I can't find in Ryan's charts. keep in mind it's a 1997 SC harness and 1998 computer
ALTERNATOR "L" goes to #61 on clear plug "S" goes...... ? "F" goes ........?
SC BY PASS SOLENOID: "A" to #77 clear "B" to .......?
OBD2 PLUG #9 to #15 blue plug #14 to...........? #16 to hot fused #8 to ....? both #4+5 to block ground
AC Compressor plug where does the green wire pin to ?
TEMP SENDER "C" on the plug goes to what pin ?
AC Line "B" to where
EVAP solenoid "B" + "C" ?
Then there's another 3 pin plug (yellow insulator)with a red, black and yellow wire (Don't know what it's for). black goes to ground, red and yellow ???
And "Last" but surely not least, On the IGN CONTROL PLUG "B" is "supposed to go ( according to Ryans chart), to pin #53, it Can't, because "B" goes about 2 feet then "splits" into 2 wires, 1 going to the Cam sensor "C", and the other going to the Crank sensor "D". WHAT am I doing wrong ???? HELP ! Getting too old for this, Wife thinks I'm crazy! Surely appreciate the help.
Getting close, a few more that I can't find in Ryan's charts. keep in mind it's a 1997 SC harness and 1998 computer
I assume this means you are wiring it an a 1998 harness... And will answer based on the 1998 chart...
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Originally posted by Lou6t4gto: ALTERNATOR "L" goes to #61 on clear plug "S" goes...... ? "F" goes ........?
L to (clear) C2-61, you can eliminate the other two
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Originally posted by Lou6t4gto: SC BY PASS SOLENOID: "A" to #77 clear "B" to .......?
A to (clear) C2-77 B to C203-K
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Originally posted by Lou6t4gto: OBD2 PLUG #9 to #15 blue plug #14 to...........? #16 to hot fused #8 to ....? both #4+5 to block ground
2 to (blue) C1-59 4 to GROUND 5 to GROUND 9 to (blue) C1-15 16 to POWER, 12v constant
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Originally posted by Lou6t4gto: AC Compressor plug where does the green wire pin to ?
You need to build a relay. It will go from the compressor to the relay
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Originally posted by Lou6t4gto: TEMP SENDER "C" on the plug goes to what pin ?
C to C500-C2
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Originally posted by Lou6t4gto: AC Line "B" to where
Are you talking about "B" on the A/C pressure sensor? If so, B to (clear) C2-34
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Originally posted by Lou6t4gto: EVAP solenoid "B" + "C" ?
Digital EVAP should only have an A/B. Do you mean the EGR? EVAP is A to C203-K B to (blue) C1-76
EGR is A to (blue) C1-32 B to (blue) C1-31 C to (clear) C2-28 D to (clear) C2-33 E to (clear) C2-4
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Originally posted by Lou6t4gto: Then there's another 3 pin plug (yellow insulator)with a red, black and yellow wire (Don't know what it's for). black goes to ground, red and yellow ???
I have to think on this one. Okay, thought on it. Is this your MAF? I forget the shape because I run a NorthStar. If it is the MAF: A to (blue) C1-13 B to Ground (my notes say this wire is black/white) C to C203-F (my notes have this as pink, not red. Same difference to me.)
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Originally posted by Lou6t4gto: And "Last" but surely not least, On the IGN CONTROL PLUG "B" is "supposed to go ( according to Ryans chart), to pin #53, it Can't, because "B" goes about 2 feet then "splits" into 2 wires, 1 going to the Cam sensor "C", and the other going to the Crank sensor "D". WHAT am I doing wrong ???? HELP ! Getting too old for this, Wife thinks I'm crazy! Surely appreciate the help.
Your wife is probably right... But that aside...
Are you plugging directly into the harness, or are you using the adaptor? If using the adaptor, you only need to worry about: A to (blue) C1-54 B to (blue) C1-53 C to (blue) C1-9 D to (blue) C1-8 E to C500-C3 (this is your Tach Signal) F to (blue) C1-7 G to (blue) C1-48 H to C500-E3
Originally posted by Lou6t4gto: Getting close, a few more that I can't find in Ryan's charts. keep in mind it's a 1997 SC harness and 1998 computer
ALTERNATOR "L" goes to #61 on clear plug "S" goes...... ? orange +12v unswitched (I use the same feed as Pin 20 Blue -- A 10A fused line from the power distribution posts) "F" goes ........? wack it off
SC BY PASS SOLENOID: "A" to #77 clear "B" to .......? C203 K Pink
OBD2 PLUG #9 to #15 blue plug (not needed) #14 to...........? not used #16 to unswitched fused (Again same as pin 20 Blue) #8 to ....? not used #4 to relay ground #5 to clean (PCM) ground #2 to Pin 59 Blue (Needed)
Use different ground spots for the Blacks (relay/power ground) and the Black/Whites (sensitive grounds) (PCM, MAF, OBD2)
AC Compressor plug where does the green wire pin to ? A/C Relay Green
TEMP SENDER "C" on the plug goes to what pin ? C500 C2 (assuming 85+)
AC Line Wnat A/C line? "B" to where
EVAP solenoid The EVAP solenoid has a two pin connector so there isn't a C on it. "B" + "C" ?
Then there's another 3 pin plug (yellow insulator)with a red, black and yellow wire (Don't know what it's for). black goes to ground, red and yellow ??? No idea
And "Last" but surely not least, On the IGN CONTROL PLUG "B" is "supposed to go ( according to Ryans chart), to pin #53, it Can't, because "B" goes about 2 feet then "splits" into 2 wires, 1 going to the Cam sensor "C", and the other going to the Crank sensor "D". WHAT am I doing wrong ???? HELP ! Getting too old for this, Wife thinks I'm crazy! Surely appreciate the help.
Ryan was referring to the 8 pin plug of the engine harness to the ICM harness. He is never referring to the 14 pin connector on the ICM. Also you are referring to the wire from pin N of the 14 pin connector ( you are starting on the wrong end)
ICM wiring - Ignore the PCM pins since this is for a different PCM
[This message has been edited by phonedawgz (edited 07-05-2013).]
I think I'm close! That "diagram" helped me figure out the problem with "B" on the ign. I swapped "B" & "N" somehow (both being light colored with a stripe) the wires are so discolored it was hard to tell. Yes, I should have done 1 at a time. On the part of the harness that has the EGR, AC, MAP, there is a "Gang" of pink wires with 1 leading out, where does That Go ? also, same for the harness for the INJECTORS, (the Pink "Common" ?) THANKS ALOT !
before I even think about "Wrapping" this thing, I will "go over" everything at least 1 more time, ( But not tonight) Again, thank you !
Originally posted by Lou6t4gto: On the part of the harness that has the EGR, AC, MAP, there is a "Gang" of pink wires with 1 leading out, where does That Go ? also, same for the harness for the INJECTORS, (the Pink "Common" ?) THANKS ALOT !
I don't think that is your A/C, more likely the TPS. EGR pin D, MAP pin C and TPS pin C all get put together at (clear) C2-33. I think the wire was gray though.
All injectors go to C203-J for the 12v power.
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Originally posted by Lou6t4gto: before I even think about "Wrapping" this thing, I will "go over" everything at least 1 more time, ( But not tonight) Again, thank you !
Use a VOM (Volt-Ohm-Meter) to verify everything. Print the sheet and check it off. Then wrap it! You had the nards to tackle it on your own, knock it out of the park!
Also, I pulled the wires for the Oil Pressure sender, knowing that the Fiero one requires a 3 wire setup. How To ?? ( I'm going to "T" in a mechanical Gauge, but I'd like the original one to work also).
The 1 gang of pink IS the AC line, the EGR, the O2, the evap solenoid. then has 1 wire leading off to "Pin".
The AC clutch is usually Dk. Green and Black. Sometimes it is Dk. Green and Gray. The Black or Gray of the clutch goes to ground
The AC pressure sensor is Black, Red/Black and Gray.
What colors are on this connector you are calling A/C
The EGR colors are varied. None of the EGR colors wire to +12v switched WHEN USING A 98-02 PCM. You have to wire the EGR, using the LETTERS of the connector, according to Ryan's 98 - 02 sheet. The 97 wiring does have EGR pin E going to switched +12. 98 - 02 does not.
The O2 sensor has Purple, Tan, Pink and Black. The Pink of the O2 sensor goes to switched +12v
The Evap Solenoid has a pink wire that runs to switched +12v
When making the harnesses I always cut the spices apart. Because the wires run in the wrong direction, the spices won't allow you to route the harness correctly. The injectors run the wrong way. The switched +12v leads run the wrong way. Cut the splice, route the wires the correct way, resplice where you need to. Usually what I do is splice longer wires onto the Pink and then have the major splice of all the Pinks to C203 pin K inside of the firewall bulkhead conector.
Use a 88+ style oil pressure connector. If you use a 4 pin connector it gives you the option of using either the 3 pin Fiero 0 - 80 oil pressure sender/oil pressure switch, or the 4 wire 98 Bonneville 0 - 120 oil pressure sender/oil pressure switch.
Per the pin letters cast into the body of the oil pressure sender connector
A - Top - Tan (Fiero color) or Tan/Black (3800 olor) - To C203 Pin E B - Bottom - Black - To engine ground C - Right in this picture - Orange/Black (Fiero color) or Red (3800) - Unswiched fused power from the fuse box - C203 - B D - Left in this picture - Tan;/White (Fiero color) or Gray (3800) - To Fuel Pump
Some don't like the idea of wiring up the oil pressure switch back up to the fuel pump relay. I do. If the fuel pump relay were to fail, the engine would still start, however it would require some cranking before it would build up oil pressure, turn on the switch, and then build up fuel pressure. As long as you notice if this were ever to happen and then know to check the relay/oil pressure switch, there is no down side to hooking up the switch unless the switch were to fail closed. If you didn't notice you would be running on the switch solely which could then prematurely wear out the contacts it the switch.
If the fuel pump relay were to fail and you don't have the back up switch wired, you would be stranded.
[This message has been edited by phonedawgz (edited 07-06-2013).]
the EGR does have E run to the gang of other pink wires.( what do I do? , cut it off and re run it ? , to where? ) The AC sensor I'm talking about is RED and gray (well used to be, now it's tan). The pink from the O2 sensor goes to the gang of pink wires to 12 volts, (but where?) OK, I'll get an '88+ style switch for the oil pressure, (run what wires for that to where ?). MAF sensor, where is the pin for PCM "power feed" ?
Yes cut the EGR pin E wire from the power wires and run it per Sinister's sheet.
You will need the 3 pin AC pressure sensor connected up for the A/C to work. If you don't have the 3 pin pressure sensor you will need to get one. The switch connector you have now won't be used.
HO2S Sensor 1 heater D connect to Pin K of Fiero C203 connector, share with other components; change INJ2 fuse to 20amp
A - Top - Tan (Fiero color) or Tan/Black (3800 olor) - To C203 Pin E B - Bottom - Black - To engine ground C - Right in this picture - Orange/Black (Fiero color) or Red (3800) - Unswiched fused power from the fuse box - C203 - B D - Left in this picture - Tan;/White (Fiero color) or Gray (3800) - To Fuel Pump
MAF sensor Ignition Power C connect to Pin F of Fiero C203 connector, share with PCM IGN power feed circuit
MAF sensor, wire "C" goes about 2 feet from the plug, then splits into 2 wires ! Is the 2nd wire needed ??
When making the harnesses I always cut the spices apart. Because the wires run in the wrong direction, the spices won't allow you to route the harness correctly.
The speedo buffer also needs to be tied to C203 pin F
So there are three things that will connect to C203 pin F.
Your question - Can you use the splice at the MAF sensor to send the voltage back to the PCM? Yes that would work. That also isn't how I would do it. Running from C203F to the MAF sensor pin C and then sending it back to the PCM Pin 19 Blue means your sending it out and then back. It make the wiring more complex and does so unnecessarily.
So I would cut out the splice on the pink wire of the MAF sensor and resplice it to have only one wire run to the three wire splice that connects to C203 pin F.
The other two wires that need to be in that splice are PCM pin 19 Blue and the Speedo Buffer.
I'll definitely be getting 1 of those from you. Is it included in your harness w/ the auto option ? How much do you charge to "set up" the PCM for this ? the ICM" Harmess", is that set up for the "STOCK location ? Looking at your prices, I'm sick I ever started this ! If I can't get it to work, You are definitely #1 for me to buy from. Thanks
Actually I include the speedo buffer on both MT and AT harnesses if I know the PCM is programmed for the proper incoming PPM.
If I don't know then on MT harnesses I leave it off.
The stock ICM harness will reach to allow the coil pack to be mounted on the front firewall easily, IF you leave enough on the 8 pin connector engine harness side to allow the ICM harness to be stretched in that direction.
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Originally posted by Lou6t4gto:
I'm doing the Trans now. I Have all of Wires Except, there is" No reference" on any of the "charts" for letter "M" (black wire) from the Trans Plug.
PCM Blue - 56 blk sensor ground output connect to → TPS:A; ECT:A; MAP:A; IAT:A; A/C Press:A; EGR:B; 4T60E:G; 4T65E:M
On the trans, there's the 1 big plug, the selector plug, and a 3rd one. the 3rd one has letters "A"- "G" . Where do these wires get pinned to ? and what IS that plug for ? (Speedometer ?) not knowing what it is called, I don't know what to look for on the wire diagrams. thanks
On the trans, there's the 1 big plug, the selector plug, and a 3rd one. the 3rd one has letters "A"- "G" . Where do these wires get pinned to ? and what IS that plug for ? (Speedometer ?) not knowing what it is called, I don't know what to look for on the wire diagrams. thanks