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tachometer installation on om617a

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2uma
Posts: 17

tachometer installation on om617a

Post#1 » Tue Apr 13, 2021 6:24 am

I bought tachometer+all needed like that:
Image
but I don't to plug the wiring, somebody have a drawing for me?
thanks

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Fernando BR
Posts: 2085

Re: tachometer installation on om617a

Post#2 » Wed Apr 14, 2021 6:52 am

If i remember well
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Mercedes-G-300-Gd-Drehzahlmesser-12-V-Diesel-W460.jpg

2uma
Posts: 17

Re: tachometer installation on om617a

Post#3 » Thu Apr 15, 2021 12:07 am

Thanks, I did that first, but didn't work, I think 12v is missing somewhere...

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Fernando BR
Posts: 2085

Re: tachometer installation on om617a

Post#4 » Thu Apr 15, 2021 6:48 pm

The tacho is the P3 clock at section 9 , you have the wires and colors . Hope it helps.
Attachments
wiring.pdf
(857.53 KiB) Downloaded 20 times

2uma
Posts: 17

Re: tachometer installation on om617a

Post#5 » Fri Apr 16, 2021 6:55 am

Thanks, do you know where go the cable 133 & 135?

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Fernando BR
Posts: 2085

Re: tachometer installation on om617a

Post#6 » Fri Apr 16, 2021 2:56 pm

It brings rpm pulse to the clock . Amplifier - Clock. On those diagrams there are always 2 numbers . One the matricial number, the other is where the wire goes.

all the best
Attachments
wire2.jpg

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Fernando BR
Posts: 2085

Re: tachometer installation on om617a

Post#7 » Fri Apr 16, 2021 3:31 pm

Dont know if this upgrade is still available or not. But thats how amplifier interior looks like (this is the modern version). May be Vadim , member of this forum can help you better than me.

viewtopic.php?f=21&t=15350&p=146669&hilit=617A+tachometer+amplifier#p146669

2uma
Posts: 17

Re: tachometer installation on om617a

Post#8 » Sat Apr 17, 2021 2:29 am

perfect now, it's understood

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