Wiring Help Needed
Thread Starter
Instructor
Joined: Jan 2016
Posts: 148
Likes: 16
From: Verona KY
Wiring Help Needed
The car is a '86 coupe w/ 157k miles. The digital cluster is the issue.
As I'm driving, the cluster will intermittently blank out then come back on 2-3min later. It goes thru its power-up sequence as if the key were turned off and back on. BTW: when the cluster is dark, the main odometer continues to operate and record mileage; everything else blanks out.
I talked with Bryan at batee.com and he said there have been issues between in the 12-pin connector between the circuit boards. The cluster was serviced some time before I bought the car as it has the tamper stickers on the back cover of the cluster. So, I pulled and disassembled the cluster and resoldered the pins and sockets on the boards.
The issue came back and I'm sitting here searching the service manual component location section (8a-201) and I can't find either splice S213 or ground point G201 listed in the book.
Jonathan.....
As I'm driving, the cluster will intermittently blank out then come back on 2-3min later. It goes thru its power-up sequence as if the key were turned off and back on. BTW: when the cluster is dark, the main odometer continues to operate and record mileage; everything else blanks out.
I talked with Bryan at batee.com and he said there have been issues between in the 12-pin connector between the circuit boards. The cluster was serviced some time before I bought the car as it has the tamper stickers on the back cover of the cluster. So, I pulled and disassembled the cluster and resoldered the pins and sockets on the boards.
The issue came back and I'm sitting here searching the service manual component location section (8a-201) and I can't find either splice S213 or ground point G201 listed in the book.
Jonathan.....
Team Owner
Joined: Sep 2003
Posts: 25,406
Likes: 2,744
here's a post by CliffHarris with an image of G201 - I'd suggest you do an advanced search for "cluster" using CliffHarris as the user and you should gather some good reads.
https://www.corvetteforum.com/forums...post1591310463
S213 should be maybe in the '86 FSM on 201 FIG-10A I got that info from an '86FSM but here's a thread with the same reference information. a search for S213 should work if you do it in the C4 "sub-forum".
https://www.corvetteforum.com/forums...post1568862704
I would think Bryan might even have a reference to it.
https://www.corvetteforum.com/forums...post1591310463
S213 should be maybe in the '86 FSM on 201 FIG-10A I got that info from an '86FSM but here's a thread with the same reference information. a search for S213 should work if you do it in the C4 "sub-forum".
https://www.corvetteforum.com/forums...post1568862704
I would think Bryan might even have a reference to it.
Last edited by WVZR-1; Feb 9, 2017 at 05:02 PM.
Thread Starter
Instructor
Joined: Jan 2016
Posts: 148
Likes: 16
From: Verona KY
I'm sitting here looking 8A-201-10 Fig. A and I'm not seeing S213.
I'm seeing S214 and S214 in addition to S203 but I'm not seeing S213. Could my copy of the FSM have S203 mismarked? My copy is showing it just above the C100 connector and it looks like there are multiple wires coming into the harness there.
Jonathan.....
I'm seeing S214 and S214 in addition to S203 but I'm not seeing S213. Could my copy of the FSM have S203 mismarked? My copy is showing it just above the C100 connector and it looks like there are multiple wires coming into the harness there.
Jonathan.....
Team Owner
Joined: Sep 2003
Posts: 25,406
Likes: 2,744
I didn't look at the image just saw it mentioned in the text sections of the FSM This AM I looked. I see your issue and I've no idea where you go.
Here's an '86 image and also a '87 image. My '86 FSM is a pdf and using a search for S218 I see no other reference to an S218 in the FSM. Draw your own conclusions
Here's an '86 image and also a '87 image. My '86 FSM is a pdf and using a search for S218 I see no other reference to an S218 in the FSM. Draw your own conclusions
Thread Starter
Instructor
Joined: Jan 2016
Posts: 148
Likes: 16
From: Verona KY
I'm not seeing the same thing you're not seeing. I see S212 and S214.
I'm going to pull the lower panel and trace the harness or just run a new ground wire.
Jonathan.....
BTW any idea what the ambient temp override switch is that's listed in the sensor ground circuit from terminal D3?
I'm going to pull the lower panel and trace the harness or just run a new ground wire.
Jonathan.....
BTW any idea what the ambient temp override switch is that's listed in the sensor ground circuit from terminal D3?
