the notorious overhead console...

I have a 96 jimmy and am installing the "mode" computer.

I talked to a guy on AIM who said that there was a main ecu wiring harness that goes under the steering wheel. He said that the dark green wire is the vehicle speed sensor and the purple wire is serial input.

Does anyone know if this is true?

Is this large colorful bunch of wires that harness?

http://files.automotiveforums.com/gallery/watermark.php?file=/500/240769wireharness.JPG

Thats too wild I just e-mailed you about the wearbouts of the SERIAL DATA and VSS. Rlift say's you need to run to the computer. (both wires)
S-10 Fourms say the VSS at the BLACK side of the main computer is PIN 3. I have not got that far in the install to find out. All I have left are the VSS wire and the SERIAL DATA. I am getting temp for like 60 sec then goes -- I think it is trying to update and the other wires are not connected I will know more later today.

Maddog

Was cleaning up...yesterday and found my schematics

VSS=Pin 4 (dk green) on the black connector at the ecm
Serial data=pin 11 ( PPL ) on the black connector at the ecm

aren't pin 3 and 4 both vss?

aren't pin 3 and 4 both vss?

Yes, but 3 is for the cruise which is 9000 pulse where as pin 4 is 4000 pulse which is the proper freqency...

Was cleaning up...yesterday and found my schematics

VSS=Pin 4 (dk green) on the black connector at the ecm
Serial data=pin 11 ( PPL ) on the black connector at the ecm


Ok got everything hooked up went to pin 4 drk/grn for VSS and pin 11 ppl for serial (Yellow). Air temp sensor reads for about 60 seconds then goes --. I start the truck and it appears then quits. It is showing 99mpg ave and 375 gal used then they too also go to the --. I don't know what I could have done I have all good connections that I know of. And yes my compass is also reading C and will not calibrate.

Maddog

you have to drive in concentric circles to calibrate it

Check your grounds...

you have to drive in concentric circles to calibrate it

Check your grounds...
Yea I did that I drove around and around and around. Do I have to hold the buttons while I am driving. Everything goes blank after 60 secs. If I do hold it it goes to 8 and the reboots and still has the C

where did you hook pin 7 up to? (RAP Fuse supply voltage)

where did you hook pin 7 up to? (RAP Fuse supply voltage)
To Radio power drk/grn 7

wrong circuit, needs to go to pin b11 on the BCM connector (pink/blk) circuit 1303

wrong circuit, needs to go to pin b11 on the BCM connector (pink/blk) circuit 1303

I ran the serial data to 11 is that the same one.number 7 list as 1301

I ran the serial data to 11 is that the same one.number 7 list as 1301

I looked and the only thing is seen was pink/wht. I have it wired as follows.


7 dk/grn to radio power
8 black/white and black from OH switch lites to black passenger mirror ground
9 drk grn/blk to pin 4 of black side of computer (BCM)
10 Lt grn/black to sensor on radiator mount ground to lite on inside hood
11 gry to radio gry
12 ppl/white to brown lite switch
13 not used
14 Orange constant-passenger mirror feed for OH lites (switched) and the DIC
15 Yellow to pin 11 purple at black side of computer (BCM)
.Maddog

I looked and the only thing is seen was pink/wht. I have it wired as follows.


7 dk/grn to radio power
8 black/white and black from OH switch lites to black passenger mirror ground
9 drk grn/blk to pin 4 of black side of computer (BCM)
10 Lt grn/black to sensor on radiator mount ground to lite on inside hood
11 gry to radio gry
12 ppl/white to brown lite switch
13 not used
14 Orange constant-passenger mirror feed for OH lites (switched) and the DIC
15 Yellow to pin 11 purple at black side of computer (BCM)
.Maddog

NOOOOOO...#7 goes to the BCM NOT THE ECM (BCM =Body control module) #7 connects to position B11 on the BCM which is a pink wire w/ black stripe...

NOOOOOO...#7 goes to the BCM NOT THE ECM (BCM =Body control module) #7 connects to position B11 on the BCM which is a pink wire w/ black stripe...

Ah Im sure that may have something to do with it. Now all I have to do is find the BCM!

Ah Im sure that may have something to do with it. Now all I have to do is find the BCM!

SOrry I have 7 drk green to radio power
8 to pass mirror ground
9 drk grn /white to pin 4 drk grn/white -blck side computer
10 LT Grn/ Blk to air temp senor
11 gry to radio gry
12 ppl/wht to brown atswitch for headlamps
13-----
14 Orn to passenge mirror constant feed
15 Yellow to ppl pin 11 blck side computer

Drop the main kick panels, it's up behind the middle./

Drop the main kick panels, it's up behind the middle./
Yea just called the dealer and found that out. I am over it for today thanks for all your help. I was just wondering why the #7 had to go to that. WHy cant it just run of the radio power?. I see that it says RAP FUSE SUPPLY what does that mean.

I forgot what it stands for but it's not radio power

Retained Accessory Power.

Not RAP music. :lol:

I am patiently awaiting another success story, lol

I am patiently awaiting another success story, lol

I have not had time to get to the last wire and other half has truck today (while I service her's). I was talking with another friend of mine and he said I can pull the same power RAP(insted of b11 on BCM) from my fuse box. Anyone know if this is true? as it would save a lot of headache rather than trying to go up inside of dash which is like no mans land of endless wires and objects in your way.

I have not had time to get to the last wire and other half has truck today (while I service her's). I was talking with another friend of mine and he said I can pull the same power RAP(insted of b11 on BCM) from my fuse box. Anyone know if this is true? as it would save a lot of headache rather than trying to go up inside of dash which is like no mans land of endless wires and objects in your way.

Do it from the bcm as a 200khz signal is pumped through that line.

Do it from the bcm as a 200khz signal is pumped through that line.
OK that is what I will do I am intrested to see if the thing is gonna work? Maybe tommorow I can get to it!.

Maddog

Goodluck!

My overhead console has only temp and compass.. is there a way to get an updated one so it has gass milage and all that.. ? Its for a 99 Blazer .. thanks -tom

IVIr_Evil']My overhead console has only temp and compass.. is there a way to get an updated one so it has gass milage and all that.. ? Its for a 99 Blazer .. thanks -tom

LOL there may be a bit of wiring that would be required.
Maddog

Do it from the bcm as a 200khz signal is pumped through that line.
OK! I have my dash tore all apart and I think I found the BCM is it a silver box say 3 inch wide and about 5 inches long 16 pin . Well if that is it I am not seeing a pink wire with a black strip. Im starting to get a little unnerved at this thing. Now I really have it all tore apart. Can someone let me know what to do or if i am the right location or what?

Maddog

OK! I have my dash tore all apart and I think I found the BCM is it a silver box say 3 inch wide and about 5 inches long 16 pin . Well if that is it I am not seeing a pink wire with a black strip. Im starting to get a little unnerved at this thing. Now I really have it all tore apart. Can someone let me know what to do or if i am the right location or what?

Maddog

What color is b11?

What color is b11?
1 sec let me check

1 sec let me check
blue with white stripe

blue with white stripe
No I counted wrong there is no wire in 11b

No I counted wrong there is no wire in 11b
Yes 9 and 11 b are empty

I did see a yellow or white with black at about pin 7 or so

then you don't have ahold of the body control module... Should be 2 or 3 harness' going into it.

then you don't have ahold of the body control module... Should be 2 or 3 harness' going into it.
holy I am not seeing anything like that all I have seen in the middle of the dash was this silver box that has one harness that has 16 wires going into it

holy I am not seeing anything like that all I have seen in the middle of the dash was this silver box that has one harness that has 16 wires going into it

You may want to swing by the dealership parts dept and have them print out a blow up of where it is and what it looks like. I'd take a pic for you but I'm not ripping apart my stuff without installing something.

You may want to swing by the dealership parts dept and have them print out a blow up of where it is and what it looks like. I'd take a pic for you but I'm not ripping apart my stuff without installing something.
I hear ya I got the parts guy on the line now and he is saying there is no bcm on this truck. And you were right I had a hold of the 4 wheel drive box

There is a body control module in that truck, it controls most of the accessory functions.

There is a body control module in that truck, it controls most of the accessory functions.
I went to the dealer and they told me to look under my console but that they were unable to locate it. It seems mine is a first run for early 96 manufactured in 95 so there is just no telling. I just went to the bone yard and exchanged it for the on/off and I am going to put it in and call it a day!

I went to the dealer and they told me to look under my console but that they were unable to locate it. It seems mine is a first run for early 96 manufactured in 95 so there is just no telling. I just went to the bone yard and exchanged it for the on/off and I am going to put it in and call it a day!


Well it's been intresting to say the least. I put the on/off console in and it works perfectly. I will have to say that that was my last mod for awhlie. I like it it looks good and it works. No mileage or that stuff but who cares it will serve the purpose!.
Maddog out!

[QUOTE=maddog245]Well it's been intresting to say the least. I put the on/off console in and it works perfectly. I will have to say that that was my last mod for awhlie. I like it it looks good and it works. No mileage or that stuff but who cares it will serve the purpose!.
Maddog out![/QUOTE


Well it seems I am not done yet. I was driving down the road and turned radio off and the console also turned off. I guess I am going to have to find another power source. Oh goody.

Bad news , im sorry to hear this

Bad news , im sorry to hear this
NO prob I will get it sooner or later

Hahaha, maddog you have run into the same problems I did. My jimmy is a 96 but manufactured in december 1995 too. I don't know if this is the cause of the problem though. I know your frustration!

I wired mine to the ignition behind the radio and have had no problems with the on/off at least.

Hahaha, maddog you have run into the same problems I did. My jimmy is a 96 but manufactured in december 1995 too. I don't know if this is the cause of the problem though. I know your frustration!

I wired mine to the ignition behind the radio and have had no problems with the on/off at least.

LOL I knew you would have something to say. Where di you hook up the green wire at for power. I have mine to my radio and when I turned it off It turned my console off hahahahahahaha

LOL I knew you would have something to say. Where di you hook up the green wire at for power. I have mine to my radio and when I turned it off It turned my console off hahahahahahaha

Do you have an aftermarket radio? You probably have the console hooked up to an external amp power signal. I can't remember what color I tapped off the radio (it might actually be dk green), but it is the ignition signal, which is +12v when the key is turned on. Your best bet would be to use a multimeter to find it.

Do you have an aftermarket radio? You probably have the console hooked up to an external amp power signal. I can't remember what color I tapped off the radio (it might actually be dk green), but it is the ignition signal, which is +12v when the key is turned on. Your best bet would be to use a multimeter to find it.

I have the original tape player what not my build date wat 6/26/95 and the tech at the dealer was even surprized to see some of the things in it. I think it is a half breed. Half 95 half 96 I will find out what the best source is since they are telling me there is no BCM not even under the floor console (they had me look) I am also having trouble with the keyless entry which I changed the acctuator and still am not having any luck getting it to go into program mode. I have the RKE and they brought up my truck and what was installed when it was built and it does have it. I am keeping this one for awhile and would like to have it. I am going to get a remote start so they can deal with it when they put it in!.

Maddog