Fox T-Bird/Cougar Forums

Technical => Electrical Tech => Topic started by: rizinstar on September 20, 2014, 05:08:50 PM

Title: Bulbs inside electronic cluster?
Post by: rizinstar on September 20, 2014, 05:08:50 PM
I have a 1983 Tbird Heritage with an electronic cluster in the dash.
Both turn signal indicator & the High Beam indicator bulbs have burned out. (One at a time)
Are these inside the cluster itself or are they behind it?
Also are these bulbs actually colored or clear? My chilton's book says they are 194/37 bulbs, but neither
shows their actual location or says what color the bulbs actually are. Anyone with this information,
or how to change them out would be appreciated.
Title: Bulbs inside electronic cluster?
Post by: White85GS on September 20, 2014, 05:19:07 PM
Clear. My buddy did a write up on disassembling the 83-84 electronic cluster on here.
Title: Bulbs inside electronic cluster?
Post by: Trinom on September 20, 2014, 05:36:55 PM
Pull the cluster out and you will immediatelly see all the bulbs in the rear side of the instrument cluster. Nothing is hidden inside.
Title: Bulbs inside electronic cluster?
Post by: kylesburrell on September 21, 2014, 06:23:56 PM
yeah theyre small glass bulbs that sit inside plastic sockets
Title: Bulbs inside electronic cluster?
Post by: jcassity on September 21, 2014, 08:41:18 PM
yes, Lumpycheesman did the electronic cluster write up.. its in my diy link,, very rare cluster.  there are maybe a half dozen people here with one,, maybe a dozen.

presto!!!!!!!
http://www.foxtbirdcougarforums.com/showthread.php?21828-83-instrument-cluster&highlight=digital
Title: Bulbs inside electronic cluster?
Post by: White85GS on September 21, 2014, 10:00:00 PM
He's a very good friend, we talk almost everyday
Title: Bulbs inside electronic cluster?
Post by: rizinstar on September 25, 2014, 05:40:05 PM
Great! Thanks for the info.
Title: Bulbs still won't light up
Post by: rizinstar on October 16, 2014, 06:47:07 PM
Quote from: rizinstar;438320
Great! Thanks for the info.


I changed out all the suspect bulbs with new ones, and reinstalled the electronic cluster.
To my amazement they still don't light up. I turned the headlights on bright, no bright indicator light still. The turn signals all work, (front & rear), but the turn signal indicator bulbs still don't light up either. Does this mean the cluster itself has gone bad? I also checked all my fuses, all good.
Title: Bulbs inside electronic cluster?
Post by: softtouch on October 18, 2014, 12:26:49 PM
Closely examine the connector. From my 84 EVTM it looks like connector position 17 is the ground for all those lights.
Title: Bulbs inside electronic cluster?
Post by: jcassity on October 19, 2014, 10:09:50 AM
you could alligator clip in a temporary ground from the wire mentioned above and connect to the steering column or another chassis ground , see if they come on then.
Title: Bulbs inside electronic cluster?
Post by: jcassity on October 19, 2014, 10:40:06 AM
here is the 84 layout, one year earlier may be similar

the dashed box called instrumentation illumination is considered bulbs for the whole cluster.
what you are saying is only turn & high beam are your issue.

does everything else on the cluster light up?
does your radio , heater ect light up as well?
Title: Bulbs inside electronic cluster?
Post by: jcassity on October 19, 2014, 10:54:11 AM
here are two more
Title: Bulbs inside electronic cluster?
Post by: jcassity on October 19, 2014, 10:58:29 AM
left turn = source from multifunction switch= turn signal flasher
right turn= source from multifunction switch= turn signal flasher
high / low beam = source from multifunction switch

instrumentation cluster = source from fuse 13 but if blown other interior illumination would be down as well.

what happens when you turn on your hazards, to the L & R turn bulbs light up?  if yes= swap the hazard flasher in turn sig flasher place ( I think they are the same) then get new flasher.

you may have two separate problems.  the high/lo beams are separate from turn signals but are common when they hit the multi function switch.

if you have "auto lamp" feature then make sure that those functions are OFF when testing.
Title: Bulbs inside electronic cluster?
Post by: rizinstar on October 21, 2014, 02:31:06 PM
Is this connector attached to the back of the cluster? Because the cluster would not come out enough to unhook anything...I ended up changing the bulbs out from the front of the cluster...I could not even get my hands behind the cluster, was a cable or something holding it. I am such a nOOb...lol...Dome light and door panel lights work...heater a/c switch light doesn't...door ajar light, low fuel and AMP(battery) lights all light up when I turn key on. Digital Fuel Gauge and Speedometer light up on cluster, nothing else. Hazards light up on outside of car, just not the indicator bulbs. Same with High Beams and Turn signals...just no indicator bulbs lighting.
Title: Bulbs inside electronic cluster?
Post by: rizinstar on October 21, 2014, 02:38:38 PM
Is this connector attached to the back of the cluster? Because the cluster would not come out enough to unhook anything...I ended up changing the bulbs out from the front of the cluster...I could not even get my hands behind the cluster, was a cable or something holding it. I am such a nOOb...lol
Title: Bulbs inside electronic cluster?
Post by: softtouch on October 21, 2014, 07:30:08 PM
Quote from: rizinstar;439467
Is this connector attached to the back of the cluster?
Yes
Quote
Because the cluster would not come out enough to unhook anything...I ended up changing the bulbs out from the front of the cluster..
If you have a meter, you can probe the bulb sockets to see if the voltage is there..
Quote
I could not even get my hands behind the cluster, was a cable or something holding it.
Yes, the speedometer cable is holding it back.
Quote
Digital Fuel Gauge and Speedometer light up on cluster, nothing else.
By this, do you mean LEDs that come on with the ignition switch or the illumination lights that come on with the headlights?

This past summer, I changed these bulbs in my grandson's 97 Taurus. The only thing you could see at night was the gas gauge.
Of the 5 bulbs, only one was actually burned out. The bulbs were just no longer making good contact with the socket due to oxidation of the bulb wires and the sockets.
Title: Bulbs inside electronic cluster?
Post by: softtouch on October 21, 2014, 07:57:58 PM
Speedo cable