rxspeed87

just curious how you hook up a external tach

trying to play with a few things but I need a tach hooked up under the hood so I don't have to go look at my dash everytime I change something

I know on my old camaro it would have a wire nut that was exposed but I am not seeing that here

so what do I hook it up to?

MikeL

Yellow wired pigtail bullet connector on trailing coil pack. It's yellow on my '87. Might be different on a series 5.

There should be nothing hooked to it right now.

1_dollar_83_RX7

stupid...j/k i don't know how either

rxspeed87

ok
well I am taking a look tonight and will see whats up

TRURX7

STUPID!!!

MaxRX7

estupido

NZConvertible

Yep, this is the one to go for. Mazda put it there to hook up a diagnostic tach, so it's perfect. Get 12V from any switched source that's handy.

BTW, what's wrong with the stock tach?

rxspeed87

ok so I looked

didn't see any yellow wire open down there


any pics?

MikeL

Now that I look harder, the yellow wire has a blue stripe. The yellow is almost faded to white.

The bullet connector and Yellow/Blue wire come out of a harness that goes to the trailing coil pack.

Find the white connector(s) that are on the trailing coil pack. Follow the wire harness and find an open bullet connector.

Crappy image below. I have my boost controller ghetto'd into that wire with tape.

Icemark

Even better... that same yel/Blu wire can be found at the power steering computer under the dash on the drivers side, or at the back of the cluster, so you don't have to run out under the hood.

rxspeed87

I didn't find it but then again I am working on 2 hours of sleep


I will try tomorrow after sleep