Help with wiring.
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Senior User
Joined: Sep 2003
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From: Manton,MI
Help with wiring.
I need to bypass the neutral safety switch on my 93 Aero 2wd A4LD. There is one plug with 3 red wires and then another plug with like 6. I don't have a hanes or chiltons and really dont want to buy one. Thanks RB
Laughing Gas
Joined: Oct 2005
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From: The OC
Why do you need to bypass? The neutral start switch is the plug above the shift linkage next to the intermediate band (rear) adjusting screw and nut. The forward plug is for the 3-4 shift and converter clutch solenoids.
FTE Community Team
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From: Oak Harbor, Washington
The three-wire connector is the hot & two grounds to let the ECM lock up the torque converter and enable overdrive.
You want the five-pin connector. Looking at the wiring diagram, looks like you want to short the Red/Light Blue with the White/Pink.
HTH
You want the five-pin connector. Looking at the wiring diagram, looks like you want to short the Red/Light Blue with the White/Pink.
HTH
Post Fiend
Joined: Oct 2005
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From: Kiev, Ukraine
There are 2 connectors on A4LD. Connectro with 3 terminals is for Lock Up and OD, other for reverce light and neutral switch.
Term 1 and 4 on shifter swith. Red/lt.blue and pink wires. Pink is term 50 of ignition switch. Red/Lt.blue directly runs to starter solenoid.
Term. 3 and 2 are for reverce light.
Term 1 and 4 on shifter swith. Red/lt.blue and pink wires. Pink is term 50 of ignition switch. Red/Lt.blue directly runs to starter solenoid.
Term. 3 and 2 are for reverce light.
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From: Manton,MI
Originally Posted by lv2race
Why do you need to bypass? The neutral start switch is the plug above the shift linkage next to the intermediate band (rear) adjusting screw and nut. The forward plug is for the 3-4 shift and converter clutch solenoids.
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From: Manton,MI
I'm getting nowhere fast with this. I was missing the Neutral safety switch plug so i had nothing to wire that. I've put an APB out on the plug we will see if I can find it. So i just twisted them together and it now starts. That left me with a red wire a purple/orange and bk/pk wire. I twisted the purple and bk wire together and no lights, so i tried all three wires in every configuration with no luck. I got out a test light and had no power with key on. So I checked the fuse block and the fuse had no power on either side. So what gives? I got to thinking after I gave up that the headlights are not plugged in but I can't see why that would make a difference. Any thoughts? RB
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FTE Community Team
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From: Oak Harbor, Washington
Here, through the wonders of PMView & PhotoShop, is a concatenated set of wiring diagram fragments from the 1993 Ford Aerostar CD. Follow the red line from battery to bulbs.
(click on image for full-size)
(click on image for full-size)
Last edited by asavage; Feb 1, 2008 at 11:49 PM.
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From: Manton,MI
Originally Posted by asavage
Here, through the wonders of PMView & PhotoShop, is a concatenated set of wiring diagram fragments from the 1993 Ford Aerostar CD. Follow the red line from battery to bulbs.
(click on image for full-size)
(click on image for full-size)
FTE Community Team
Joined: Nov 2001
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From: Oak Harbor, Washington
No, current does not flow through any relay on the way to the backup lamps.
If you have a modern browser, when you click on the thumbnail image above, the full-sized image will be resized to fit your browser, but there is still too much detail squished down to read. Then click on the image again and (if you are using a modern browser), it will zoom in.
I just realized that the image above shows the same fuse twice, so i just re-did the red line to try to indicate where Ford shows the same fuse twice.
Current flows through a black fusible link, through splice S268, the Ign. switch, then the fuse panel. If you have no voltage at the fuse, the most likely place to look would be that black fusible link (there are at least two black fusible links, so check them both: at the starter solenoid behind the battery), followed by the Ign. switch.
There is no relay involved, so swapping them around is a waste of time.
If you have a modern browser, when you click on the thumbnail image above, the full-sized image will be resized to fit your browser, but there is still too much detail squished down to read. Then click on the image again and (if you are using a modern browser), it will zoom in.
I just realized that the image above shows the same fuse twice, so i just re-did the red line to try to indicate where Ford shows the same fuse twice.
Current flows through a black fusible link, through splice S268, the Ign. switch, then the fuse panel. If you have no voltage at the fuse, the most likely place to look would be that black fusible link (there are at least two black fusible links, so check them both: at the starter solenoid behind the battery), followed by the Ign. switch.
There is no relay involved, so swapping them around is a waste of time.
Last edited by asavage; Feb 2, 2008 at 10:16 AM.
Thread Starter
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Senior User
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From: Manton,MI
Originally Posted by asavage
No, current does not flow through any relay on the way to the backup lamps.
If you have a modern browser, when you click on the thumbnail image above, the full-sized image will be resized to fit your browser, but there is still too much detail squished down to read. Then click on the image again and (if you are using a modern browser), it will zoom in.
I just realized that the image above shows the same fuse twice, so i just re-did the red line to try to indicate where Ford shows the same fuse twice.
Current flows through a black fusible link, through splice S268, the Ign. switch, then the fuse panel. If you have no voltage at the fuse, the most likely place to look would be that black fusible link (there are at least two black fusible links, so check them both: at the starter solenoid behind the battery), followed by the Ign. switch.
There is no relay involved, so swapping them around is a waste of time.
If you have a modern browser, when you click on the thumbnail image above, the full-sized image will be resized to fit your browser, but there is still too much detail squished down to read. Then click on the image again and (if you are using a modern browser), it will zoom in.
I just realized that the image above shows the same fuse twice, so i just re-did the red line to try to indicate where Ford shows the same fuse twice.
Current flows through a black fusible link, through splice S268, the Ign. switch, then the fuse panel. If you have no voltage at the fuse, the most likely place to look would be that black fusible link (there are at least two black fusible links, so check them both: at the starter solenoid behind the battery), followed by the Ign. switch.
There is no relay involved, so swapping them around is a waste of time.
