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Adding a Tacho   Tuning&Exhaust:99-05 non cal

Started 7/6/21 by LordRamiro; 4239 views.
In reply toRe: msg 24

From: LordRamiro


ok Guys,

I finally had the chance to try the new cabling configuration I found on the amazon website sor My tacho.

Now they are talking about a high voltage signal.

Where on earth do I find such a wire ??

I tried the input AND the output of both coils and it doesn't budge an inch

I only managed to make the lights go on the darned thing.

( I might have asked though I don't remember)

Thanks in advance

Donn (99Orton)

From: Donn (99Orton)


I'm not sure how we can help anymore. I would have tossed that Amazon Chinese junk in the trash by now. 

Sick Mick* (quick_mick)

high voltage signal wire is most likely a wire tapped into one of the plug wires...


From: LordRamiro


Hey Mick

so I would have to "splice" a plug`s wire to get that high voltage ?


From: eruby


I think all you have to do is wrap that wire around the plug wire. I would not splice it in.

Sick Mick* (quick_mick)

Some of the old and cheapie tachs required you to attach the wire to the spark plug terminal....basically removing the metal tip and crimping another one on with the tach wire included. On an 1100 that'll be fun because it's a special tip.

More modern better quality tachs just let you wrap the signal wire around the plug wire.....

In reply toRe: msg 30

From: LordRamiro


What if I just twist it around the tip of the spark plug and put the connector back in ?

would it be a fire hazard ?

Sick Mick* (quick_mick)

Well....you could try that I guess. Sure wish you had some instructions....

Donn (99Orton)

From: Donn (99Orton)


Remember if it isn't for a dual fire system it will probably give false readings or not work at all.

In reply toRe: msg 33

From: LordRamiro


My question will probably sound dumb, but what's the difference between a single or dual fire system,

I mean,

if one coil gives 1500 rpm, the other coil gives at 1500 RPM as well yes ?

so why would the readout be false.

My (car) mechanic mind doesn't grasp this principle

  • Edited September 21, 2021 12:39 pm  by  LordRamiro