DIY: TACH INSTALLATION INSTRUCTIONS

[Strider199]

Ok I think it's time those with a 2012 yaris without a tach start posting their installs.
I cant believe my 5 speed manual doesn't come with a tach. I'm looking for a good spot to mount a tach which is close to the connections needed. Air bags in the a-pillar make me nervous.

Who's first?

[CTScott]

Originally Posted by Strider199

Ok I think it's time those with a 2012 yaris without a tach start posting their installs.
I cant believe my 5 speed manual doesn't come with a tach. I'm looking for a good spot to mount a tach which is close to the connections needed. Air bags in the a-pillar make me nervous.

Who's first?

For the 2012, the Tach signal is still on pin 9 (light green wire for 2012) of the OBD connector.

The pink wire on the key switch is still ignition switched power for the 2012.

[Strider199]

Thanks for the info CTScott.
I went out today to a few stores looking for a tach I like. Did not find one. I bought a new horn which I will install when it warms up this weekend but I'm still looking for a decent tach. Auto Zone and Canadian Tire just don't have the selection. On-line they have a ton of gauges but I hate the extra duty I have to pay being in Canada. Any stores around the Hamilton - GTA area which have a decent selection?

[avlisk]

What about a Toyota tach from the SE model? I'm considering buying a Yaris LE automatic, but I want a tach, too. So, would an SE replacement tach be an easy installation? And fit right in the dash where there's a big, round space for one? Thanks in advance for your opinions.
Ken S.

[CTScott]

Originally Posted by avlisk

What about a Toyota tach from the SE model? I'm considering buying a Yaris LE automatic, but I want a tach, too. So, would an SE replacement tach be an easy installation? And fit right in the dash where there's a big, round space for one? Thanks in advance for your opinions.
Ken S.

Yes it will work, but finding one will be very difficult until the 2012 has been out long enough for some to make it to junkyards. Per your other thread about buying one from the dealer; You may have a hard time getting the dealer to order a cluster for you, as they often will not let you order a cluster that doesn't match your VIN configuration. If you are buying a 2012, you can try to make your sale dependent on them ordering the cluster (just make sure you get it in writing on the contract).

[RedRide]

On the '09, it the light brown wire for the tach signal.
The brown wire is in the exact same position as the blue wire.

It had me stumped for short while when installing my tack as I also have an '09.

[ijose 845]

hey im having problems with the greenish blue wire for the rpm read outs. do i stick the wire in the same slot as the greenish blue one? or do i splice the green and the greenish wire together?

[CTScott]

Originally Posted by ijose 845

hey im having problems with the greenish blue wire for the rpm read outs. do i stick the wire in the same slot as the greenish blue one? or do i splice the green and the greenish wire together?

Always make a good connection with wiring. Either use a tap splice connecter (that crimps onto the two wires cutting through the insulation to make contact with both wires) or solder and heat shrink the connections.

[ijose 845]

oh okay i got it thanks! and as for the light wire is it okay if i put it on the ingition fuse?? it works pretty well for me now! will it hurt anything?

[CTScott]

Originally Posted by ijose 845

oh okay i got it thanks! and as for the light wire is it okay if i put it on the ingition fuse?? it works pretty well for me now! will it hurt anything?

That's fine if you do it with an add-a-fuse or tap the pink ignition wire on the ignition switch connector. Shoving the fuse in with the wire under it is not a good way to do things.

[ijose 845]

Originally Posted by CTScott

That's fine if you do it with an add-a-fuse or tap the pink ignition wire on the ignition switch connector. Shoving the fuse in with the wire under it is not a good way to do things.

ahh thats what i did....but its in their really snugg. im just afriad to cut any of the factory wires cause i dont want to cut too much or mess up and ruin the car completely :/

[guy2can]

2004 Echo RS H/B: Installed an Equus Tach from Canadian Tire, picked up power via add fuse (7.5a)at the "ACC" fuse, and also spliced it for he display power. The tach wire on this card on the OBD2 plug was black with a silver band.

[cdilmore]

Sharrrp!

[YarisAddict]

I Spliced the green wire into an orange wire that is on the far bottom left on the ecu port. I've read online that that was where I'm supposed to do it since I have tire pressure monitor. The orange wire is in replace of the greenish blue wire your talking about in cars with tire pressure monitor. It has been driving me crazy that it wont read rpms. Lights work and it has power, also I put my ground exactly where you have yours. Any Ideas?

Thx

09 Yaris3drhatch

[CTScott]

Originally Posted by YarisAddict

I Spliced the green wire into an orange wire that is on the far bottom left on the ecu port. I've read online that that was where I'm supposed to do it since I have tire pressure monitor. The orange wire is in replace of the greenish blue wire your talking about in cars with tire pressure monitor. It has been driving me crazy that it wont read rpms. Lights work and it has power, also I put my ground exactly where you have yours. Any Ideas?

Thx

09 Yaris3drhatch

The orange wire is the correct one for your car. Double check your splice, particularly if you used a tap splice, as that wire is only about 24 AWG, so the tap splice needs to be a tiny one to make a proper connection.

[YarisAddict]

I used the one that came with the kit. Is there any other way to splice the wires together? I'm just afraid now that the orange wire is basically in half once I remove that little plastic connector. Sorry I'm a noob when it comes to the wiring side of things.

[CTScott]

Originally Posted by YarisAddict

I used the one that came with the kit. Is there any other way to splice the wires together? I'm just afraid now that the orange wire is basically in half once I remove that little plastic connector. Sorry I'm a noob when it comes to the wiring side of things.

The best method is to strip insulation off both wires and solder them together and then tape or heat shrink. But, crimp on splices are fine as long as they are the correct size for the wires. If you remove yours and find it did cut the wire, it is actually not a big deal, since the tach signal to the OBD connector is really not used by anything.

[jesus43block]

de donde sacastes la señal del rpm ? la puse en el cable azul y no me llega completa