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1993 New Yorker EVIC in a 1994 Caravan

A little project I have been working on. You can see details here

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I am putting a EVIC overhead console from a 1993 New Yorker into my

1994 Dodge Caravan. However, I have run into a few hiccups.

First off is I had to redo some of the traces on the main board for the EVIC, as an electrolytic filter cap leaked, eating away some of the traces. That problem has been solved. All other caps look okay, and meter okay.

This is the big problem. I can put the EVIC in the van, and it will power up. It receives data over the CCD Bus, and will show me mileage info (miles to empty, MPG instant and average). When you shut the van off, the display will stay on for 30 seconds. This is because the CCD bus stays active for 30 seconds after the van is shut off and the driver's door is closed.

The pickle, when you go to restart the van, the EVIC will not come back on. I can plug my Snap On MT2500 scanner into the van, read the CCD bus, and it will see the EVIC head. It can run a short display test, and detect button presses of the control buttons. However, the display will not "wake up" unless you unplug the EVIC and plug it back in. Then the display will work again, until it goes back to sleep.

There is six wires in the EVIC head. Two grounds (grounded to the body). CCD Bus + & - (wired with a twisted pair of wires down to the CCD Bus diagnostic port under the dash. A pink wire which powers the map lights and EVIC head, and a yellow wire which is supposed to be the IOD wire for the clock in the head. Both the pink and yellow are wired to a constant hot.

I also have the Engine node from the donor vehicle. It is installed, and wired to the CCD bus, but I have not yet wired it to a keyed hot. (I had it wired to a constant hot, but the EVIC head would not shut off, likely due to the CCD Bus staying active.)

So, anyone here want to take a crack at my troubles?

Reply to
Homer Simpson
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Hi Homer...

Can't tell you what your problem is, but I can perhaps give you a bit of a start toward it...

I have a 94 lhs with the overhead, and it extinguishes as soon as the ignition turns off. Perhaps they're different, because I have a "clock" up there, but it isn't a real time clock... even the manual isn't clear about what it's indicating, but I suspect it just might be recording time that the ignition is on.

If I'm guessing right, then I suspect what's happening to you is that your "clock" wire should be wired to an "ignition on" point, rather than constant hot.

Not a mechanic, just an old retired electrical guy, so take my suggestion with a grain of salt...

Take care.

Ken

Reply to
Ken Weitzel

Hi again, Homer...

Hope you read this before you consider acting on what I wrote above, because another issue popped into my head that's worth considering. (I did warn everyone that I'm not only an old guy, but also a stroke victim, eh? :(

With mine at least, when the headlights are turned on the display intensity dims relative to the position of the dash lights illumination. Leaving me to think that the "clock" isn't recording ignition switch on time, but perhaps actual engine run time, in which case the pink wire may be connected instead to the computer.

In any case it can't be connected to constant 12v.

Hope someone else can cast more light on this; if not I'll be happy to pull mine down and take a look best I can see just where the wires go for you.

Take care.

Ken

Reply to
Ken Weitzel

The pink wire is the feed wire for the maplights. The yellow is the IOD (Ignition Off Draw). This wire is what saved the memory for the real time clock.

The clock on this one is a real time clock.It has the time and date.

Reply to
Homer Simpson

I was thinking it is probably recording the Elapsed time which is the running time of the vehicle. Mine does that and states in the owners manual as well. You can use it to time your trip's as well as just letting it run.

Reply to
hartless

i knw this thread is old but i am losing hope and patience i am wiring in a 93 overhead colsole into a jeep cherokee (looks real nice too) but i am having trouble wiring this console in i have two sets of lights one set is courtesy lights(on w door open)and the other set is a map light on when you depress the lamp itself i have all of these wired properly but am having trouble finding the constant for the unit itself and possibly the ground... i think i have the temp sensor wires corect (only because i have them matched color for color) but could use any help i can get and this thread is the closest i have found to answering any of the questions i have had i will give you all my wires and colors with what i have found that they do any help on this is appreciated /yel-dome + \pnk/blu dome -

/pnk map light + \blk map - (may be computer - not sure)

/blk/blu temp switch \pur/grn temp switch that leaves 4 wires tan /pur/brn \tan/blk these two are twisted together blk/grey help please if i have to get the "CCD" bus and make it hot just to use the temp i can do that also! i already have this thing cut in and would love to be able to use just those two functions and the dome,map lights too xjpheonix

Reply to
xjpheonix

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