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> 155 instruments on a 146, why not
dante giacosa
post 31st May 2017 12:53
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I'm shortly going for the oil pressure & temperature retrofit gauges option, and I want to use genuine Alfa gauges.

I have established that the 155 has both the gauges I need and more, and am under no illusions about what I would need to do, to get the gauges from the cluster.

However, physical issues aside (would it fit?- probably not) - I wonder if with the conventional electronics; the binnacles are compatible? Could you run a 155 binnacle, from 146 electronics...??

They certainly connect differently- we have an A plug and a B plug on the 145/6 instruments, but the 155 has five connectors.

I just wonder if the core hardware is capable of driving the 155 instruments.


Does anyone know anything about the 155, in terms of speedo pulse generation (from which revs are derived, in conjunction with ABS I think?) and suchlike.. and whether it differs massively from our cars...??
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sanitary
post 31st May 2017 19:34
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QUOTE(dante giacosa @ 31st May 2017 13:53) *
I'm shortly going for the oil pressure & temperature retrofit gauges option, and I want to use genuine Alfa gauges.

I have established that the 155 has both the gauges I need and more, and am under no illusions about what I would need to do, to get the gauges from the cluster.

However, physical issues aside (would it fit?- probably not) - I wonder if with the conventional electronics; the binnacles are compatible? Could you run a 155 binnacle, from 146 electronics...??

They certainly connect differently- we have an A plug and a B plug on the 145/6 instruments, but the 155 has five connectors.

I just wonder if the core hardware is capable of driving the 155 instruments.
Does anyone know anything about the 155, in terms of speedo pulse generation (from which revs are derived, in conjunction with ABS I think?) and suchlike.. and whether it differs massively from our cars...??



155 and 145/6 binnacles are very different, but...

if you ask on the 155.org forum I'm sure you will get an answer (some useful stuff and possibly some mickey taking)

contact Lancsbreaker for potential parts (he's on 155 forum alfaowner and others)



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Pantera
post 1st June 2017 01:32
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I can tell you that the speedo signal and tach signal (which are different), are perfectly compatible with any gauge, included an aftermarket gauge.
For example I have installed an Autometer tachometer and its working flawless with that signal.
I dont know about the other gauges but I think the signals will be generic so you can install any gauge you want.
It's a different matter for the panel on the bottom.
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dante giacosa
post 1st June 2017 10:30
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Thanks San-

I might just do that... that might be just the connection I need to make... naughty.gif

Thanks Pantera-

that's what I thought! how do mean by the 'panel on the bottom'..?

The check-lights..?


wow- I've just spotted a '146' emoticon! I've got to use it NOW

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Pantera
post 1st June 2017 10:41
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Yes!, I mean the check lights.
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Antonio
post 1st June 2017 13:11
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I also believe hall frequency from speed sensor and Engine rev pulse from Injection ECU is the same beetween both. The only downside is that 155 instrument cluster is older and i.e, the fuel level is very inaccurate when on bends and such.. Other than that is thing of modifying thw wiring harness to fit 155 plugs and is done, of course you have to fit oil temp&pressure sensors..

Best thing would be to source the instrument cluster from a 155 Sportiva MY'95 onwards, that's the prettiest one IMHO.

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dante giacosa
post 1st June 2017 15:54
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Thanks for that information Antonio- food for thought.

The level of the fuel on the gauge of course; would be governed by the sender in the tank; which I wouldn't be swapping...

modifying wiring is my day job, so that's no worries to me...

155 Sportiva MY'95- note taken; thank you...


Hey San,

I've joined 155.org, but can't think how to explain myself!

This post has been edited by dante giacosa: 1st June 2017 15:54
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dante giacosa
post 13th June 2017 13:04
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Well,

Thanks to the extremely kind members of 155.org, significant progress has been made, with this little adventure.

I have a set of glassless 155 gauges, and guess what; they fit! In fact- they are a bit small for the 146.

However, I think I like the core aesthetics of the 146 platform, and am going to continue with 'plan A'; which is to plunder 155 oil temp & pressure gauges for retrofitting.
(As opposed to plan B; which is to adapt the core wiring of the car to fit 155 gauges)

Schematic info has been top notch, and I was able to present dummy resistance loads to the binnacle, to produce a result on the core gauges that I am after, thus verifying functionality. (I also got the backlight to come on!)

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dante giacosa
post 14th June 2017 08:31
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Down to the nuts & bolts now...!


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Ganz
post 14th June 2017 23:42
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Looks like it will work. Good idea.


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dante giacosa
post 15th June 2017 09:02
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Thanks. We'll see.

Here is the mock-up, to show viewing angles from driver's height (my height anyway)

I'm not sure I can get the gauge 'motors' in low enough behind. I might need to try a steeper angle of front surface. Plus it's all going to be recessed and behind Perspex.

It's a start...


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Ganz
post 15th June 2017 23:35
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Wow, I didn't realise you were going to put them in that location. Quite an innovative idea. Can't wait to see how it works out.


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dante giacosa
post 16th June 2017 09:48
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Yeah;

I want to keep that place down below the stereo free, for 'other' developments...

It's quite a customisable interior, the 14* platform isn't it..?

There's a lot you can do, I think. But i don't want to upset the clean & simple appearance of the basic interior. Which I really like.

I'm not sure this position if going to work out though for viewing angles- there's actually quite a lot of 'mech' behind the gauge surface. Still experimenting.
I think I would have to try and convince myself they were 'occasional' use gauges, as the angle is going to be compromised; you might not see the top 30% of the gauge- and that ruins it for me; it's got to 'work' properly, if its' going to work...
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dante giacosa
post 17th June 2017 16:57
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Further investigation has revealed, that with the ancillary 'light pipes' for lighting the needles, and the proper mounting of the 'motors' relative to this, demands a significant distance behind the gauge front panel.
Then of course there is a the space in front of the gauge needles required for a glass front.

I'm not sure I can do it with the 155 gauges, without removing some material off the can that holds the motor coil itself.

However, I do have a legacy Lancia Y10 clock set from back in the day (not mine- I have never owned a Lancia) and the needles hinge from the bottom on the gauges. Plus- there is a pair on a panel for oil pressure & temperature...
The viewing angle might work...



This post has been edited by dante giacosa: 17th June 2017 18:03
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dante giacosa
post 4th July 2017 10:27
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Sorry about the delay there, gauge-fans. I've been quite busy: and a lot of it, is to do with the project.

Rather than type a load of stuff about what has happened- I will let the pictures do the talking. Needless to to say this is no where near finished- but what remains is cosmetic...

(Sorry- picture 4 is in upside down)

This post has been edited by dante giacosa: 4th July 2017 10:29
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Ganz
post 4th July 2017 20:34
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Wow, didn't know they were going to look like that. I quite like the art deco look about them. Are you going to polish the alloy or spray it black. Get some carbon fibre wrap on it.


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dante giacosa
post 5th July 2017 16:20
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Thanks, Ganz!

Actually- I'm just experimenting with that front panel cutout at the moment. I can always take more out- but I can't put the material back! (unless I make another front panel)

It's going to be black, and I'm going to try and go for the OE look, as much as possible.

In that respect, I think I'll be going for most of the front panel cut out, with the complete of both gauges showing...

- like an extension of the dashboard...

This post has been edited by dante giacosa: 5th July 2017 16:21
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Ganz
post 8th July 2017 23:18
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Wise move smile.gif Although the deco novelty is nice its a 90s car and probably wouldn't have been a good design fit.


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dante giacosa
post 14th July 2017 15:58
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Yeah, maybe

Call me old fashioned, but I actually think of '90s cars as an era in themselves, 'like' art-deco...

So the ultimate aim is to produce something, which anyone unfamiliar with the 145/6, would assume was OE...

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dante giacosa
post 15th August 2017 08:30
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Hi gauge-fans!

The mission continues...

The last weeks have seen a complete reworking of an internal bracket, which held both the perspex parts together, into a much larger piece, which also holds the backlighting and fan-indicator light boxes. It also provides fixing to the rear of the ashtray.

I should mention, that the second functionality of this gauge 'display', is to show when the radiator fan comes in, and at what speed. I'm always worrying about coolant temperature in cars (of this age) and having an indicator for each fan speed is something I will find amusing in traffic.
So the 'display' also now incorporates the cutouts for two 13mm x 13mm indicator squares, as found in the standard ideograms on the 155 cluster.

Pics attached.

Plus, after extensive fooling around, and excellent advice from my friends on here, I identified the switched ground lines for the radiator fan 1st & 2nd speed relays, and ran bonds from them into the cabin. In conjunction with the key-operated orange line, which is the constant (+) for these relays, I was able to rig up a temporary set of test lamps in front of the dashboard to establish functionality.

Return lines back to the oil temperature and pressure senders have also been pulled in, and all I need now is the senders themselves..! I followed the 155 wiring convention of grey and grey/red for these lines.




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