cd.thomson
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| posted on 1/2/10 at 07:04 PM |
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dodgy tacho pt II
this is my tacho:
according to this website i should have 4 switches on the back, but i only have two (the small blackbox
at the top of this pic):
so whats the dealio? with both the switches "off" the revs are double what they should be, and the other iterations dont seem to work
either.
also, while im here, anyone know what should be connected to what on the back of my fuel gauge? i have three post connectors and two wires coming off
the back
Craig
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hicost blade
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| posted on 1/2/10 at 07:09 PM |
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http://www.caigauge.com/page30.html
and
http://www.caigauge.com/page19.html
and even
http://www.caigauge.com/page15.html
Hope this helps.....
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cd.thomson
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| posted on 1/2/10 at 07:10 PM |
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thank you, the second two do but i actually linked the first page in my original post.
the instructions dont work 
Craig
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blakep82
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| posted on 1/2/10 at 07:13 PM |
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2 wires out the back of the fuel gauge is just for the illumination.
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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hicost blade
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| posted on 1/2/10 at 07:14 PM |
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Then you need to phone Caerbont Automotive on: 01639 732200 and ask for Ian John (top technical man).
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blakep82
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| posted on 1/2/10 at 07:30 PM |
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hmmm
http://www.caigauge.com/page11.html
thats the instructions for the classic motorsport range. yours in from the motorsport range isn't it? don't know if thats different to
classic motorsport
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Miks15
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| posted on 1/2/10 at 07:44 PM |
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I just thought, is your engine running wasted spark?
Would this mean that it would be getting twice as many pulses every cycle, trying switching both switches on (like it would for 2 cylinder). It might
make the difference.
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cd.thomson
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| posted on 1/2/10 at 07:47 PM |
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that classic wiring is for a coil driven tacho, this one isnt.
i have set both to "on" and it didnt work at all. 1 on and 2 off gives 2x revs and 1 off and 2 on gives nothing too.
Craig
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blakep82
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| posted on 1/2/10 at 07:49 PM |
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at the bottom of the page i posted there is a section about wasted spark systems
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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cd.thomson
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| posted on 1/2/10 at 07:51 PM |
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from two double ended coils, which drives the tacho directly 
Craig
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blakep82
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| posted on 1/2/10 at 08:00 PM |
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never said i understood it lol. nah, just wondered, because it said motorsport range, if it was more relevant to your tacho
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Moorron
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| posted on 1/2/10 at 08:31 PM |
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The above linked instructions arnt for your tacho, i had the same and couldnt find the 3rd or 4th switches after looking on the net i think i found
the real instructions which means yours is most likely the more modern one. This one is programmed with 2 switches which you add into the loom off the
back of the tacho. i think there are 3 wires, all of which connect to earth to make the contact and 1 switch is the recall feature, mode feature and
enter setting feature. in other words i have 3 switches on my dash to program it with.
if only i could find those instructions i could help more 
[Edited on 1/2/10 by Moorron]
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Moorron
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| posted on 1/2/10 at 08:35 PM |
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http://www.caigauge.com/page10.html
look at the loom and see if you have the same wires. if you have then all you need is a few switches to get it up and running (or just earth the wires
to set it up)
* please check its the earth first *
Sorry about my spelling, im an engineer and only work in numbers.
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hicost blade
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| posted on 1/2/10 at 09:20 PM |
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I would phone Ian John rather bridging wires as that could end up being expensive........
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cd.thomson
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| posted on 1/2/10 at 09:25 PM |
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yes i will phone ian tomorrow, but thanks for giving me that info!
Craig
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