overhead console install in 03 ZR2 truck

[chevynuts]

I bought a 98 long ohc from a GMC Envoy and would like to test it to see if it works. Can someone walk me thru the procedure?

[HenryJ]

There is a good thread in the electrical modifications forum on installing an overhead console with trip computer. That will give you the pin outs. Without installing the best you can hope for is to test the lights. a 9 volt battery can be used to do that. To know if everything is working you are going to have to install it.

[chevynuts]

Thank you for your help!

[chevynuts]

How does the wire from the temperature sensor for an overhead console get into the cab ?

[HenryJ]

Through the C209 connector at the upper left under the dash by the A pillar.

It is already there on the utility body style harness.

[chevynuts]

Through the C209 connector at the upper left under the dash by the A pillar.

It is already there on the utility body style harness.

What does this look like or where is it exactly ? Is it the big bunch of wires ? Do I have to make a hole or just push it thru ?

[HenryJ]

It is the connector above and behind the dash fuse block. Check out the adding a trip computer thread. That gives the pin out.

Plug-n-play. The wiring is all there from that point. All you need is the harness up the A pillar.

[SleeperSS]

It is the connector above and behind the dash fuse block. Check out the adding a trip computer thread. That gives the pin out.

Plug-n-play. The wiring is all there from that point. All you need is the harness up the A pillar.

I already gave him a link to the thread...

[chevynuts]

Here are my computer plugs. Top blue.. bottom green.Which is connector #4? Is it blue or green? Left or right? Pin #4 is it starting from left or right?

[roadrunner]

I presume you are looking for injector #4 control circuit? That's what it is listed as in the 01 manual. If so it is located 4th from the right top row blue connector as viewed in your picture. #4 pin in the other connector as viewed in your pic is not used. As stated in the 01 OEM manual. The wire coming out the back side of the connector as viewed should be light blue/black.

[chevynuts]

I presume you are looking for injector #4 control circuit? That's what it is listed as in the 01 manual. If so it is located 4th from the right top row blue connector as viewed in your picture. #4 pin in the other connector as viewed in your pic is not used. As stated in the 01 OEM manual. The wire coming out the back side of the connector as viewed should be light blue/black.

I,m sorry I should have mentioned what this is all about. I have an 03 ZR2 and am installing an long overhead console from a 98 GMC Envoy . I need to hook up a wire [dark green/white ] from pin#9 DIC [drivers info center] connector to a VSS connector.

[HenryJ]

Go to the radio. Much easier. Overhead Console Wiring Harness Instructions
The C2 connector is the one with the VSS signal. Numbered 20-11 it is pin #16 DK GRN.

[chevynuts]

I am installing a long 1998 GMC Envoy overhead console in my 03 S10 and have one wire left to connect . The dreaded VSS wire! I was told it can be got to behind the instrument cluster.Please guide me to it EXACTLY [what color.location etc.]. Please be precise ! Here is a link..Page 28
https://docs.google.com/leaf?id=0B9SEfF ... 0MTg1LThiZ jQtNmQxMzIwZDY1ZDBh&sort=name&layout=list&num=50

[HenryJ]

Who gave you that advise? Wouldn't it be better to ask them?

Please keep all this in the same thread. Starting a new thread each time confuses anyone trying to help you sort this out.

Did you try my suggestion on ZR2USA to connect to the BCM?

The BCM C2 connector (LT BLU) Top numbered A1-A12, bottom B1-B12
You want B1 DK GRN/WHT Vehicle Speed Signal

The Vehicle Speed Signal in the instrument panel cluster connector is:
Pin A4 DK GRN Circuit number 389 Vehicle Speed Signal

[chevynuts]

Who gave you that advise? Wouldn't it be better to ask them?

Please keep all this in the same thread. Starting a new thread each time confuses anyone trying to help you sort this out.

Did you try my suggestion on ZR2USA to connect to the BCM?

The BCM C2 connector (LT BLU) Top numbered A1-A12, bottom B1-B12
You want B1 DK GRN/WHT Vehicle Speed Signal

The Vehicle Speed Signal in the instrument panel cluster connector is:
Pin A4 DK GRN Circuit number 389 Vehicle Speed Signal

THANK YOU !!!!! Without guys like you I would have my electrical finger up my ass! I looked at the BCM before and the wires were really crammed in there! I went with your 2nd suggestion because of space and VOILA !!!! I have it hooked up and working with only one goof.I am sure its because "I GUESSED" with one wire [my mistake]! I have DIC pin #14 [ battery positive voltage] to my radio plug B# 1 which I was sure was ok. Then I hooked dome harness plug "C" [fuse output battery] to the same radio plug B#1 !!Now my light in the cosole [the big one with the screws under is on DIM when I put the rear console lights on [the round ones].Should I disconnect the 2nd wire [dome harness "C" ??

[HenryJ]

Should I disconnect the 2nd wire [dome harness "C" ??

Yes. It sounds like you may be overloading that wire.

[chevynuts]

Just to keep the info simple without a lot of reading. The VSS wire is connected to the green wire [back of speedo plug] .Info thanks to Henry J. The temperature sensor wire is easiest to get into the cab thru aerial grommet on passenger side floor.

[HenryJ]

If anyone else considers this , they might look closer at connecting at the BCM. It is located at the floor in front of the HVAC ducts. Much easier to access than removing the instrument cluster. Class 2 serial data is also available there as well for those installing the trip computer module.