86IROCTHD

yea have u never heard of this? first car i know of that had it was the vette but i want it and from what it looks like i think u can splice in to the vss signal and get your input from there..... and it should work.... not sure but i am gonna try it and post up my results... so as u hit the gas the volume rises and lowers depending on speed

85f-bird

had it in a rental buick once....was actually very very annoying, cause it was increasing non-porportionally (sp) to wind noise increase....so, you could relaly hear the radio kick up @ 60 mph, although the outside noises didn't get much louder than when you were doing 45. would make for a nice toy however, had the thought of doing it years ago, but through it away....the time where it would be handy is when your interstating w/ the t-tops off...then, that'd be a hands free lil' benefit.

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1985 Pontiac Firebird-4th gen dash, 4th gen center console, 4th gen seats, 4th gen door panels.
Jasper 2.8L under the hood
Rebuilt 700r4, shift kit, corvette servo, high pressure boost valve.

86IROCTHD

have an update on the headlights from a trans am to a trans am..... pre 90 i guess....there is a problem of the lights not going back down to the off/down position...... and i have found a cure.... i went through and probed the back of the headlight switch with the connector in and power running through it... and there are 2 unused terminals that supply 12v's in the off position and no current when park/headlights on....is one of the spots a, b, or c i am not by the car right now but its which ever one isnt used there are 2 that do the same thing so its either or.... now how to get it to work..... go to your 4th gen harness and start looking at the extra connectors... and find one that had a terminal that looks like the metal terminals in the connector... then cut it and carefully remove the from the connector (destroy the connector if need be but try not to bend the connector) then take it to your headlight connector and remove the little plastic snap retaining plastic peice, remove the rubber weather seal if the wire has one..... then slide it in... and replace that clip...... and splice the white wire from your factory headlight harness to the new installed wire..... and BAM the go up and down.....

85f-bird

had someone e-mail me a question about the headlight operation, so i responded to them with this.

Alright, can't remember if it was u, or the other guy who i told that the
wiring might be different....neway, this is what i got.

3rd gen..........................4th gen
Yellow (x2).....................Yellow
White............................Orange
Brown...........................Brown
Pink.............................Pink
Gray..............................Gray
Black (cluster ground).....Black

Didn't have foggies so i cna't be sure on that one...i think there's info on
it somewhere in 3rd gen cause people were having issues w/ it
before......sorry can't be of further help...


The two yellows on the 3rd gen were spliced into the one yellow on the 4th
gen...and the white from the orange was also connected to what i believe a
red from the VSS/Buffer thingie on the back of my speedo, in an attempt to
ghetto rig my speedo to work....failed attempt, needing to convert to an
electric sender. anway, anymore qudstions just ask away and i'll do my best
to help....

stage20

back from the dead. the yel/blk wire is the "low coolant sensor" wire. it actually has its own bulb, tiny lil thing, dont know why. im not using it, but its good info for someone.

why does the red wire need to be grounded? what happens if it isnt?
a GM service sheet labels it "generator output" i would assume it does something with the alternator?

FlamedROC

My volt gauge does not work on my firebird dash and the red is grounded, but I really dont care.

I wish everything was functional but one guage not workin wont bug me

__________________


86 IROC-Z---> 74' 4-bolt main 356 c.i. Vortec TPI
243 rwhp/ 343 rwtq
13.00 @102.95 mph
Twin turbo project starting soon

Proud Member Of The Minnesota F-Body Club
Exhaust Clips Click Here
Pictures and Progress on Cardomain
TGO vBGarage here

stage20

i finally got around to hooking up my 97 cluster and all gauges work WITHOUT hooking up the "thin red wire"
does anyone know what it actually does? in my case it was not an issue.
my "LOW OIL" light is on, ill make a seperate post and see if anyone knows what resistance it takes to shut it off. 12v or grounding it does NOT turn it off.

85 roc it

Not sure if this is a dumb question or not, but has any tried to connect the whole wiring harness to the stock socket for the car. Would that be easier or are the wiring totally different

85f-bird

as in just put it to the computer? should be totally different. Which is why you have to do all the fun splice here, splice there. If you've done or are doing and LT1, or LS1 swap, and have the 4th gen wiring harness, hehe, plug-n-play.

__________________
1985 Pontiac Firebird-4th gen dash, 4th gen center console, 4th gen seats, 4th gen door panels.
Jasper 2.8L under the hood
Rebuilt 700r4, shift kit, corvette servo, high pressure boost valve.

85 roc it

Thanks, that what I was wondering, Going to do it in a couple of months. Have everything. Seats, dash, door panels and console. Puttin a 385 with LT1 heads and intake int also. Probably going to get the motor in first then handle the swap. Its a 85 Iroc with a 96 6sp. so no speedo yet. Changing the TPI to 90 map system. I bougth everything to do the 90 dash swap, but selling it now. Just have to figure out how to hook the speedo to the 6sp. still not dure if its a direct wire or not.

Jekyll & Hyde

That is the low coolant light. The sensors usually die before the lights, but I guess they could be helpful. I have heard that on the 95 camaros the sensor is located in the radiator, but I can't promise anything.

stage20

sensor is on the passenger side side of the radiator. in the upper location i think. just unhook it, most people too. the light staying on is a common problem from corrosion getting on the sensor and giving it a false reading.
good luck.

tpiroc

The VSS output on the T56 should be a direct signal for later model speedometers that are VSS controlled - others that have T56 swap experience could answer for certain though. I haven't been on the board in months - that's cool this is still a sticky! I want to keep the sticky alive with some progress, but I haven't touched the Camaro in MONTHS! Once my current project gets buttoned up, I hope to tinker with this interior project in my spare time and will be eager to share it. I only wanted to paint the floor before putting it all back together, and finished that LAST fall.

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shortbed454

ok guys, im in the process of doing the 4th gen swap on my 79 camaro and so far this is the most informative site as far as the 4th gen swap is concerned that i have found. i have all of the parts to do the swap(dash, cluster, console, and seats) and i have seen it done in a hand full of cars. the only problem is, when this swap is done in a 2nd gen camaro, people swap every thing including the motor, so every thing is just plug it in ang go.
i dont have that kind of money, so i know this wont be an easy swap. i want to have a fully functional dash and i was wondering if i can swap in a harness and computer out of a third gen(wrecking yards are full of 3rd gen stuff here) so i can have a fully functional dash. i would use a harness and computer out of a 4th gen but they are hard to find in the yards arround here and they are pricey when i can find one. i hope you guys can offer me a little help here. thanks in advance.

stage20

what year is the guage cluster you are using, this is a BIG part of the conversion.

i can get you a schematic of the plug, and you can hardwire everything yourself. all you need is a few of the correct sensors and a lil creativity. so all the stuff works.
there are bugs with anything, but its not required to have a complete harness if you are just wanting the gauges themselves to work properly.
ive got a carbed motor in my ride and all my gauges work fine with my ls1 dash swap.
good luck, LMK if you have any Q's

85f-bird

hey stage 20, what'd u do for your tach and your speedometer? my tach works, but is off ( i can guage it still pretty well for speed) and my speedo well, it rests on the zero mark....

86IROCTHD

85f-bird i had to get the dakota digi box.... and the speedo you could need a 2nd dakota digi box to send the correct signal

shortbed454

when i bought my dash it came with a metel bar/bracket but im not to sure where it is supposed to mount.
wher does it connect to the dash/firewall.

85f-bird

its been a while for me, so, this could be painful....i believe that the 4th gen metal support bracket is basically connected the way the old 3rd gen bracket was. I connected it to the steering column , and then to the side post connectors at the corners of the doors. Don't believe it went all the way to the firewall, just to the body of the car.

stage20

i run a 91-92 camaro tailshaft mounted vss, and i have it ran strait to the speedo wire on the cluster.
its accurate.

IROC_5796

TPIROC any progress made with your install?

tpiroc

No, sadly, none at all; I haven’t touched the car in about a year now (criminal, I know). Even though I’ve done the nitty gritty part of wiring to the factory ECM, it’s unlikely I’ll even be using it! If I don’t choose to have a chip burned for X modifications, I’ll be using a different harness altogether meaning 1 of 2 things; I’ll manually wire all the gauges up (no biggie using engine sensors, and VSS), or just use the dash but with a full AutoMeter set in place of the factory dials.

So this may be end for any technical input I have as far as electrical goes, but I sill plan on using the dash and door panels, so I’ll definitely post that! Once I finish my Cadillac's 504, I really want to get the interior into the car since I finished painting the floor over a year ago.

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obeymybird

dope i think i got ripped on my 4th gen dash i didn't get a metal bracket with mine can i get around this some how? i have ls1 gauges witch wires need to be spliced together to make the didital odometer work?

85f-bird

just go to the yards and pull yourself a support bracket from another 4th gen dash...if you tried hard enough, you might be able to mod your 3rd gen unit to use...but i'd just advise getting the one from the 4th gen...sad part is, you'll have to go through all the trouble of pulling the dash out, which is very enjoyable in a stock 4th gen car.

obeymybird

ok i think im going to try something that no one has tryed on here yet maybe? my 4th gen dash is not in the best shape don't even think i could get it mount up so im going to remount the stock dash then cut the crap out of it then slide the 4th gen over it and use some epoxy of silcon to bond them together as they sit right now the 4th gen fits over the stock dash with no mods done to it yet so with some work and taking my time should turn out ok

stage20

OMG!
PLEASE!
NO!

its very simple to do and has been done a million times.
i have no clue how you are gonna make it look good, but the 4th gen dash is about the most simple dash swap you can do. sure nothing fits, but its all right there laid out. only a lil cutting and bracket making neccessary.
good luck!

FlamedROC

I second that Please do not do this!! But dont hijack this post please, make a new post for your idea.

Jason

obeymybird

so you think i should just stick to put in the 4th gen dash i will try i still got to get my wiring figured out yet but i have to get my rear sway bar on before i start the dash just waiting for a nice day i don't know my new dash is just in pretty poor shape the right side mount in broke off and there is no metel braket thats just some of the stuff wrong with it