Northern Auto Tech - ECU and Blue & Me Repairs

Technical Rev Counter/Tachometer Fit

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Technical Rev Counter/Tachometer Fit

elbandito472

elbandito472

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Hello again guys. Have just purchased an electric rev counter for Giuseppe along with a volt meter. Want to fit the rev counter this weekend, however i am rather confused as to what to do as there are some conflicting views in many threads...is the option described in the guides the right way to go? Has anyone done this before? Giuseppe is a 999 FIRE CLX from 93, so has twin coils and single point "injection" (gently dribble...). I would rather wire up to the coils if poss....dont really want to fiddle about with the ecu (might go all italian on me...:eek:) but if i have to then so be it. Just want some clear instructions really.....if anyone knows for sure. Cheers(y)
 
ECU is the best way to go as mentioned in amnay threads

If you go to a coil, you'll only get half a reading. but if you can set the tacho to "2 cylinders car mode" then it'll be fine.

Fitting to the ECU isn't hard at all. just remove the plug and tap a wire into the correct hole. (ECU is under the hammock just left of centre btw)
 
probably simpler to fit straight to the ECU. Got one in mine but it's a nice simple carb & single coil. As long as you can find the right one it's just a single pin connection to the ECU and you're away. More of a pain feeding the cable through the bulkhead and figuring out a feed for illumination, don't want to make it more complicated for yourself.
Andrew
 
CLXCraig said:
ECU is the best way to go as mentioned in amnay threads

If you go to a coil, you'll only get half a reading. but if you can set the tacho to "2 cylinders car mode" then it'll be fine.

Fitting to the ECU isn't hard at all. just remove the plug and tap a wire into the correct hole. (ECU is under the hammock just left of centre btw)
Click to expand...

Ok cool. The tacho i have has only 4,6,8 cylinder function, so will it still work if i tap into the ecu? also is it pin 23 for the panda clx 999 and what colour is the wire??:confused:
 
firstcar-Y10 said:
probably simpler to fit straight to the ECU. Got one in mine but it's a nice simple carb & single coil. As long as you can find the right one it's just a single pin connection to the ECU and you're away. More of a pain feeding the cable through the bulkhead and figuring out a feed for illumination, don't want to make it more complicated for yourself.
Andrew
Click to expand...

Ha ha tell me about it! I'm a vehicle electrical accessory fitter by trade, but this usually involves can-bus systems and stereos etc. It sound silly but i get more confused by simpler electrisc lol.:bang:
 
elbandito472 said:
Ha ha tell me about it! I'm a vehicle electrical accessory fitter by trade, but this usually involves can-bus systems and stereos etc. It sound silly but i get more confused by simpler electrisc lol.:bang:
Click to expand...
so much easier to wire new stuff in from scratch than trying to make it work with the existing italian voodoo eh;)
can't help with the ECU connection, too newfangled for me:mad: sounds like you'll be OK getting the rest working though. (or you're in the wrong job:p)
 
firstcar-Y10 said:
so much easier to wire new stuff in from scratch than trying to make it work with the existing italian voodoo eh;)
can't help with the ECU connection, too newfangled for me:mad: sounds like you'll be OK getting the rest working though. (or you're in the wrong job:p)
Click to expand...

Ha ha im too modest:eek: lol. Just want to get my facts straight before i go hacking into spaghetti. I believe its pin 23 from what ive read.....this sound right to anyone...clx craig...?:worship:
 
yes if the tacho is 4 cylinder it will work off the ECU. Not sure of the wire colour or loaction though. If you search the panda classic forum for threads by most easterly pandas, one of his first threads was on this topic and is very usefull. alternatively if you have ahaynes manul then it might have a diagram. Pin 23 is called control for electric fuel sender or summin i think.
 
CLXCraig said:
yes if the tacho is 4 cylinder it will work off the ECU. Not sure of the wire colour or loaction though. If you search the panda classic forum for threads by most easterly pandas, one of his first threads was on this topic and is very usefull. alternatively if you have ahaynes manul then it might have a diagram. Pin 23 is called control for electric fuel sender or summin i think.
Click to expand...

Ah ok, thought i had come across pin 23 for some reason...in the guide the guy mentions pin 1 and 19....i only have one signal lead into the rev counter lol. I'll check easterlys threads. Cheers mate.(y)
 
In a SPI engine is the pin 23, and in a MPI is the Pin 4
In a carburetor engine connects to the ignition coil
 
Last edited:
elbandito472 said:
Great, thanks mate(y). just to confirm that it is definately pin 23 even on the 999cc as well as the 1108 (selecta)?:confused:
Click to expand...

Dont worry about this last post Easterly, i just read the diagram in more detail on the link...and my panda is a iaw system so will work. thanks for that mate, will let everyone know how it goes.:rolleyes:
 
elbandito472 said:
Ah ok, thought i had come across pin 23 for some reason...in the guide the guy mentions pin 1 and 19....i only have one signal lead into the rev counter lol. I'll check easterlys threads. Cheers mate.(y)
Click to expand...

the pins I mention are the ecu output to the coils, so instead of wiring through the bulkhead into the engine bay I collect the signal from the other end of the cable.
Now in order to combine the two half signals to a 4 cyl signal I did the thing with the diodes and it works fine since;)

The diodes work as one way valves so the two signals don't mix.

I also took power for the illumination from the dashboard so it is only illuminated when I have lights on (I didn't write it in the guide).

hope this helped a bit. Please let us now know your progress(y)
cheers
 
I was fitting rev in twin coil system...I tried with PIN 23 and didn't work (however I connected to wire close to "cut off trigger" as I was to lazy to get it close to ECU, but on diagram it's the same cable)
then I tried with 2 diode system, and nothing...so at the end I've change my rev to 2 cyl and was OK. I got signal from one coil.
Everything was OK but then my coil gone....I've replaced it and never reconnected rev...I don't know if there was any connection between coil fault...
and he's my rev...
 

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