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| Digital Dash Cluster (Page 1/3) |
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statue4
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DEC 21, 11:28 PM
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What are some relatively straight-forward digital instrument cluster swap options that won't cost an arm and a leg? My speedometer gauge unit is no bueno, so I figured might as well consider a cool upgrade.
The S10 digital dash looks like it would be pretty cool, but I don't know how much wiring and sensors have to be changed.
Tom's Digital looks pretty cool, but not particularly cheap. Perhaps I could just do the speedo and tach.
Intellitronix looks similar.
I'm also considering building something of my own using an arduino or similar. Reading the VSS input seems simple enough, but building a display that captures that '80s retro-futuristic vacuum fluorescent look would be tricky.
The coolest swap would be S2000, but going from Honda to GM sounds like more work than I'm trying to dedicate to this car.[This message has been edited by statue4 (edited 12-21-2020).]
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fierosound
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DEC 22, 08:29 AM
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statue4
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DEC 22, 09:25 PM
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That looks awesome! I'll keep my eye out at the local junkyards for one.
Side note: The closest yard to me is LKQ in Wilmington, CA and I don't like it nearly as much as some of the yards back in Denver. If anyone has salvage yards they like to go to in the LA area, let me know. I've been meaning to swing by one in Oceanside that supposedly has a Fiero, but it has been there since October so I'm afraid the parts I need will have already been picked off. Oh well.
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IMSA GT
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DEC 22, 10:36 PM
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Just make sure that whatever route you choose, the cluster has all of the same warning lights as the Fiero......mainly the "check engine" light. You know all to well about California smog 
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statue4
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DEC 23, 12:16 AM
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| quote | Originally posted by IMSA GT:
Just make sure that whatever route you choose, the cluster has all of the same warning lights as the Fiero......mainly the "check engine" light. You know all to well about California smog |
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Haha true! If all goes as planned, I'll register it out of state and swap the engine by the time my next smog test is due (but we know things never go as planned). While more lenient on swaps, I'd guess some other states will still want a working CEL.
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fierosound
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DEC 23, 07:35 PM
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statue4
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DEC 24, 08:24 PM
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I went to a junkyard today and picked up a few things. Primarily went to get a set of sun visors, but also picked up a center console, original radio and original speedo from a Fiero. I also grabbed the digital dash cluster from a 1994 Oldsmobile Bravado. The image is just a reference image: I have not applied power to mine yet, so it might not even work. I did not think to grab the VSS or anything from the Bravado.
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Mickey_Moose
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DEC 27, 10:48 AM
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statue4
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DEC 30, 07:30 PM
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So I'm working on the digital Bravada (same as Blazer, S-10, Jimmy) dash install and it is going well so far. I re-flowed the power supply solder points before even trying to fire it up, because it is a common point of failure on these things.
I added spade connectors to the Bravada harness pigtail and connected it up to the Fiero harness with T-connectors, retaining the original Fiero connectors so I can switch back to the Fiero dash if I want to.
Video: https://photos.app.goo.gl/M1FVFSDV9H9LPYq7A
Next I have to cut some of the white plastic to get the Bravada cluster to fit in the Fiero "pod."
I compiled the Fiero and Blazer wiring diagrams into this quick connector pinout diagram:
Incase it gets compressed and hard to view: https://photos.app.goo.gl/cmMPRR4QBou5yW9D7
I have two questions about the wiring:
1. The digital dash has a pin for "Lights on signal." What do I do with this? I'm guessing it reduces the brightness when the headlights are on? Even though I connected the grey dimmer wires, all that happens when I turn the dimmer control down is that the display starts to flicker.
2. How do I connect the VSS? The Fiero diagram shows three important (sounding) connections: speed-sensor low, speed-sensor-high, and speed output to computer & cruise control. The digital dash only has one speed sensor input connection. How should I tackle this? I actually haven't even looked into if the Bravada/Blazer/etc used a 4000 pulse per mile VSS like the Fiero or a different number of pulses per mile.
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statue4
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DEC 31, 04:08 AM
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Got the wiring done. Now all I need to do is get a nice looking semi-transparent plastic faceplate.
For those questions I had:
1. The dimming works fine. I connected that "lights on signal" wire to the brown wire from the headlight switch.
2. I think I got the speedometer hooked up okay. I connected the speed sensor hi from the C1 speedometer connector to the Bravada light blue and black speed sensor wire. I hooked the speed sensor lo from the C1 connector to ground. Still have nothing going to the speed signal to ECM, but I have been driving the car for months wiithout a working VSS anyways, so no difference there. Because I still need the plastic VSS gear I can't test the accuracy of the speedometer, but if I take the VSS and spin it with my hand the speedometer will show change. How important is it for the ECM to know the vehicle speed? Would it run better? I guess I wont have cruise control unless I figure that out either.
It will look alot better once I get a faceplate figured out.
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