Anyone have a picture of a 82 cfi interior harness?

JeffP1167

JeffP1167

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I found this picture on ebay but thought the harness would be a 1 piece thing with a bulkhead connector that passes through the firewall.

Aside from a change in IAC wiring and addition of TPI injector pigtails (I have a 90 camaro TPI harness to make the changes) How can I add a AIT sensor and assume I will have to run wiring for a VSS as well.

The VSS I assume I could just drill hole in trans tunnel and run wiring down to it. I plan on mounting my 90 vette ecm in the stock 82 location.

I assume CFI is a MAP type system so only a few changes will have to be made to my wiring along with splicing the ecm pigtails. I really don't want to go with ecm relocation if possible and would like to use as much of the 82 harness as possible since it is in excellent shape. I also want to add VATS to my car as well but think the 90 vette has no decoder box like the F-body has and it is internal to the CCM.

here is the cfi harness I found, what other issues can you think of that I will encounter and solutions to make fixing them easier?

T2eC16NHJGoE9nuQeSrfBP6OTtWTQ60_12.jpg
 
There is no bulkhead connector. The only connectors are on the pass side under that little cover, a couple of weatherpacks to hook up the engine harness.

The main harness runs all the way to the armrest, there's a big whitish connector there that you have to wrestle out of the car. The rear small section runs to the ECM.

Run VSS through original hole for auto shifter??

VSS also runs off the rear of the speedo, I don't know the pulses for it but if it's 4004 it's compatible with what you originally have in there...but you are going to run 90 dash & gauges right??

Mount the weatherpack ECM in the engine bay, much easier to work on and you will have to splice and wire up a bunch of wires off the ECu. A complete nightmare!!

CFI is MAP yes. Speed Density, just like the 90 unit.

It's easier to just use the 90 harness and only run the wires back that you need. Power, ram power, ignition switched and FP relay wires. I did this when converting an 82 to ls1. I cut off the white main conn. of my old harness and unly used a couple of wires on it,

The white conn shares stuff w/ the main interior harness. You can hook up ign. switch there and most importantly, the check engine light without digging into the front harness.

I don;'t think the VATS is internal to the ECM. Might want to check but I think in fact it does have the decoder box, the ECM only handles injector firing in case of a vats issue the inj. won't fire. The decoder box also triggers the crank relay so the engin will not crank w vats issues.

The thing in your pic is the CFI engine harness, it runs off the conns under the little cover next to the heater box
 
The 90 dash won't be possible, that would be a nightmare in itself. I am slowly removing the dash and ecm harness from the 90, from what I can tell the ecm harness enters the car near the passenger side of the distributor. It then connects to dash wiring, I thought about mounting the ecm under the hood as well or using the 90 harness and eliminate un-needed circuits.

The reason for VSS at trans is if I use the 82 dash I am going to be putting a digital gauge setup I have for it in the car. It uses a inline speedometer cable VSS sensor to drive the digital speedometer.

I want VATS because it is a convertible and will be parked with top off occasionally so just want the added safety.
 
why use a cable, buy a direct fit VSS for the transmission. VDO makes one, Xander has it in his 77 vette. It's should be the correct pulse $ but if not you can either get a dakota digital gizmo to adjust it or I could send you a 90 PROM with the proper value in it, you'd need a moated G2 adapter board to hook it up to the ECM main board and stick the stock calpak into it for limp & cyl. select.

VSS needs to be sent to the ECM also. You can not T off the signal wire, it will read all wrong. For this, you need the same dakota digital gizmo, it has multiple split outputs for a single input

So you will hav to wire up the stock CEL, that's easiest done w/ the white conn under the armrest.

How are you going to install VATS in your steering column? Swap over the column to the Vette one?
 
JeffP1167 said:
The 90 dash won't be possible, that would be a nightmare in itself. I am slowly removing the dash and ecm harness from the 90, from what I can tell the ecm harness enters the car near the passenger side of the distributor. It then connects to dash wiring, I thought about mounting the ecm under the hood as well or using the 90 harness and eliminate un-needed circuits.

The reason for VSS at trans is if I use the 82 dash I am going to be putting a digital gauge setup I have for it in the car. It uses a inline speedometer cable VSS sensor to drive the digital speedometer.

I want VATS because it is a convertible and will be parked with top off occasionally so just want the added safety.
Click to expand...

Jeff, VATS involved some stupid key contact resister value that would be read by the computer, and allow the car to start/run the fuel pump as I recall, and so with my '87, it had a highly intermittent problem with that shit and I got a aftermarket prom burnt that eliminated the system....I recommend you get something like I have described in the past....
 
mrvette said:
JeffP1167 said:
The 90 dash won't be possible, that would be a nightmare in itself. I am slowly removing the dash and ecm harness from the 90, from what I can tell the ecm harness enters the car near the passenger side of the distributor. It then connects to dash wiring, I thought about mounting the ecm under the hood as well or using the 90 harness and eliminate un-needed circuits.

The reason for VSS at trans is if I use the 82 dash I am going to be putting a digital gauge setup I have for it in the car. It uses a inline speedometer cable VSS sensor to drive the digital speedometer.

I want VATS because it is a convertible and will be parked with top off occasionally so just want the added safety.
Click to expand...

Jeff, VATS involved some stupid key contact resister value that would be read by the computer, and allow the car to start/run the fuel pump as I recall, and so with my '87, it had a highly intermittent problem with that shit and I got a aftermarket prom burnt that eliminated the system....I recommend you get something like I have described in the past....
Click to expand...

I really like vats though, I have never had a issue with one in any of my cars. I just change the tumbler set every two years and vats has never given me a problem.
 
Twin_Turbo said:
why use a cable, buy a direct fit VSS for the transmission. VDO makes one, Xander has it in his 77 vette. It's should be the correct pulse $ but if not you can either get a dakota digital gizmo to adjust it or I could send you a 90 PROM with the proper value in it, you'd need a moated G2 adapter board to hook it up to the ECM main board and stick the stock calpak into it for limp & cyl. select.

VSS needs to be sent to the ECM also. You can not T off the signal wire, it will read all wrong. For this, you need the same dakota digital gizmo, it has multiple split outputs for a single input

So you will hav to wire up the stock CEL, that's easiest done w/ the white conn under the armrest.

How are you going to install VATS in your steering column? Swap over the column to the Vette one?
Click to expand...

Well the reason to keep the speedometer cable is my digital cluster retains the original odometer.

DSCF0880.jpg

Vats actually thought about instead of a tumbler set using a a plug in chip into the vats harness.

I have to make everything emissions compliant as well so that means check engine light, all sensors operating correctly.
 
so you take out the vss, pull the toothed reluctor thingie in there, put in a reg. gear set and get a plastic cable adapter from any thirdgen camaro.

You could get a vss to the ecm using the original sender, you however wouldn't be able to get the speedo working because it stinks and uses a stock cable. Is there no way to bypass the stock cable on it? If not, your ONLY other option if you can not swap out the vss on the trans for some reason, is a cable-X. They do work, the LS1 82 vette has one.
 
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