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Old 29-08-2009   #16
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Re: Dashboard change - tachometer installing

Job done.
The only problem was the tach signal. The BOSCH ECU sends a square-wave signal and the panel is supposed to get pulses from primary winding of the HT coil.
Just a single cut on PCB trace of INT0 interrupt of the NEC D7508HC panel microprocessor, a pair of 22K resistors and worked fine.




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Old 04-09-2009   #17
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Re: Dashboard change - tachometer installing

Those dashboard pics look great. Shame the Tipo was never sold here. Can you post up more interior and backseat shots of this great little car?
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Old 05-09-2009   #18
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Re: Dashboard change - tachometer installing

Let's keep this thread on topic, please found tons of internal/external Tipo pictures here:
http://www.fiatforum.com/members-motors/?prefixid=Tipo

Yes, it's a shame that Oz did not get those,the Fiat Tipo was a very popular car in Europe and South America.
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Old 17-05-2017   #19
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Re: Dashboard change - tachometer installing

Hi Svcglobal,
I am new on this forum, and I try to adapt a DGT Dashboard onto a Fiat X1/9 with a Bravo/Brava 16s engine. Everything works fine, except the tachometer
Your post is very old (2009), but perhaps you (if you're always here, or someone else ?) can help me with the tachometer modification :
You said that you cut PCB line to INT0 of D7508HC, ok, and you just add 2x 22k resistors : can you give me more details please ? a small schema would be very nice ;-)
Thanks
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