DIY: TACH INSTALLATION INSTRUCTIONS - Page 9 - Toyota Yaris Forums

fmicle · 08-13-2009, 06:43 AM

Just finished installing my tach, but I haven't connected the illumination wire. I don't know which way to go, the brown wire from the dimmer or the #9 fuse?

I'd like to have dimming for this one, but I guess I can live without it, I prefer connecting it to the fuse even if that doesn't give me dimming. Can anyone confirm?

RedRide · 08-13-2009, 11:58 AM

Quote:

Originally Posted by fmicle

Just finished installing my tach, but I haven't connected the illumination wire. I don't know which way to go, the brown wire from the dimmer or the #9 fuse?

I'd like to have dimming for this one, but I guess I can live without it, I prefer connecting it to the fuse even if that doesn't give me dimming. Can anyone confirm?

I connected my tach's illumination wires to the #2 fuse (Panel1).

I also added a "dimmer" that you might be intetresed in.
http://www.yarisworld.com/forums/sho...light=dim+tach

fmicle · 08-16-2009, 03:22 AM

Finally got this project done. Cutting the hole in the glove compartment with only a 1/8" drill and sand paper was a bitch... Quite happy with the result though

I also connected the illumination wire to the illumination fuse in the fuse panel. Don't remember the number by heart, but it's in the owner's manual. So I get the tach light on whenever all other instruments are lit.

darkMINI · 07-05-2010, 08:00 PM

So what if your tach signal wire on the OBDII plug is orange instead of greenish-blue? I have an '08 3-door M/T.

RedRide · 07-05-2010, 09:54 PM

Later models do no have the greenish-blue wire for the tach.
My '09 for example has a brownish wire for the tach.
Just use the wire that is in the correct position regardless of what the color might be.

darkMINI · 07-05-2010, 10:05 PM

WILCO, thanx

darkMINI · 07-12-2010, 11:45 PM

Ok, next question, got the tach mounted and hooked up. Its an 8,000 rpm tach and it for reads perfectly up to 3,500rpm, but it for some reason won't budge any further. Ant ideas? Thanks

fmicle · 07-13-2010, 02:13 AM

Defect? Can you see any obstruction that would prevent the needle from moving?

darkMINI · 07-13-2010, 03:27 PM

I guess it could be a defect. I have everything hooked up except the Illumination wire, and I don't believe that matters.
Its a 4,6,8 cylinder model and the switch is set on 4.

fmicle · 07-15-2010, 02:13 AM

Yeah, if it doesn't want to move past 3500 rpm, there must be something wrong inside...

darkMINI · 07-16-2010, 02:37 AM

Yep, went back to the auto parts store and borrowed a brand new one to compare it right in the parking lot. It turns out I had a bad tach, so they swapped me for the good one on the spot. Now I'm in business!

RedRide · 07-16-2010, 03:01 PM

Quote:

Originally Posted by darkMINI

Yep, went back to the auto parts store and borrowed a brand new one to compare it right in the parking lot. It turns out I had a bad tach, so they swapped me for the good one on the spot. Now I'm in business!

Glad you got it workin'.

Where did you mount your tach? Is is a panel mount or a pedestal mount?

fmicle · 07-16-2010, 02:45 AM

Haha, sounds familiar, I had the same problem with my tach, got a new one, worked fine, so I returned the bad one.

CueBall · 09-22-2010, 03:38 PM

Fmicle, did you mount your tach in the glovebox? I cant see the pics.

fmicle · 09-23-2010, 02:13 AM

Quote:

Originally Posted by CueBall

Fmicle, did you mount your tach in the glovebox? I cant see the pics.

OK, try to click on the links directly...

http://public.blu.livefilestore.com/...720.jpg?psid=1
http://public.blu.livefilestore.com/...723.jpg?psid=1
http://public.blu.livefilestore.com/...724.jpg?psid=1

sleey0 · 09-22-2010, 03:42 PM

Wish some company would come out with a nice A pillar guage pod already lol.

I am not a fan of drilling thru the driver's side compartment like that.

I suppose even using guage pedastals and drilling them into the A pillar would work (garm had a pic and he did this with his tc IIRC).

maxxman420 · 09-22-2010, 04:10 PM

i really need to do this. i have the same tach but in white. mine is just sitting where that johnson and johnson thing is sitting in the side cluster. haha

metalshark · 10-15-2010, 01:14 PM

Tach dreamer update: I've finished the 33 LED analog display installed in the display trim similar to my earlier BS2 tach. Those of you from the LA basin may have seen the only operational prototype of the gen 1 tach. I've finished the firmware (with the help of Prallax.com forum members) on a breadboard for a digital readout. It's running in my Yaris today. I'm changing the 4x7 segment display from red to green. I had a setback learning to solder surface mount chips for the analog display.
I'll have to do a version 1.1 layout before it's kit ready. I love the headrest video camera mount I found here. When success is apparent watch for the video coming soon to a forum near you.

08-16-2009, 03:22 AM	#3
fmicle Drives: 2007 Yaris LB Join Date: Mar 2007 Location: San Jose, CA, USA Posts: 685	Finally got this project done. Cutting the hole in the glove compartment with only a 1/8" drill and sand paper was a bitch... Quite happy with the result though I also connected the illumination wire to the illumination fuse in the fuse panel. Don't remember the number by heart, but it's in the owner's manual. So I get the tach light on whenever all other instruments are lit. Last edited by fmicle; 08-16-2009 at 03:37 AM. Reason: Added picture

07-13-2010, 02:13 AM	#8
fmicle Drives: 2007 Yaris LB Join Date: Mar 2007 Location: San Jose, CA, USA Posts: 685	Defect? Can you see any obstruction that would prevent the needle from moving? __________________ 5% Tint Rear \| Micro Image LED Ignition Light Kit

07-15-2010, 02:13 AM	#10
fmicle Drives: 2007 Yaris LB Join Date: Mar 2007 Location: San Jose, CA, USA Posts: 685	Yeah, if it doesn't want to move past 3500 rpm, there must be something wrong inside... __________________ 5% Tint Rear \| Micro Image LED Ignition Light Kit

07-16-2010, 02:37 AM	#11
darkMINI View User's Garage Drives: 08 hatch Join Date: Jul 2010 Location: C-Springs Posts: 101	Yep, went back to the auto parts store and borrowed a brand new one to compare it right in the parking lot. It turns out I had a bad tach, so they swapped me for the good one on the spot. Now I'm in business! __________________ '08 3dr HB, Black Sand, AEM, 16x6.6 Mini-Cooper wheels, DynoMax, Cruise, de-TPMS'ed.

07-16-2010, 02:45 AM	#13
fmicle Drives: 2007 Yaris LB Join Date: Mar 2007 Location: San Jose, CA, USA Posts: 685	Haha, sounds familiar, I had the same problem with my tach, got a new one, worked fine, so I returned the bad one. __________________ 5% Tint Rear \| Micro Image LED Ignition Light Kit

08-13-2009, 06:43 AM	#1
fmicle Drives: 2007 Yaris LB Join Date: Mar 2007 Location: San Jose, CA, USA Posts: 685	Just finished installing my tach, but I haven't connected the illumination wire. I don't know which way to go, the brown wire from the dimmer or the #9 fuse? I'd like to have dimming for this one, but I guess I can live without it, I prefer connecting it to the fuse even if that doesn't give me dimming. Can anyone confirm?

07-05-2010, 08:00 PM	#4
darkMINI View User's Garage Drives: 08 hatch Join Date: Jul 2010 Location: C-Springs Posts: 101	So what if your tach signal wire on the OBDII plug is orange instead of greenish-blue? I have an '08 3-door M/T.

07-05-2010, 09:54 PM	#5
RedRide Drives: '09 Yaris carmine red 2d HB Join Date: Jun 2009 Location: Middletown, NY Posts: 1,502	Later models do no have the greenish-blue wire for the tach. My '09 for example has a brownish wire for the tach. Just use the wire that is in the correct position regardless of what the color might be.

07-05-2010, 10:05 PM	#6
darkMINI View User's Garage Drives: 08 hatch Join Date: Jul 2010 Location: C-Springs Posts: 101	WILCO, thanx

07-12-2010, 11:45 PM	#7
darkMINI View User's Garage Drives: 08 hatch Join Date: Jul 2010 Location: C-Springs Posts: 101	Ok, next question, got the tach mounted and hooked up. Its an 8,000 rpm tach and it for reads perfectly up to 3,500rpm, but it for some reason won't budge any further. Ant ideas? Thanks

07-13-2010, 03:27 PM	#9
darkMINI View User's Garage Drives: 08 hatch Join Date: Jul 2010 Location: C-Springs Posts: 101	I guess it could be a defect. I have everything hooked up except the Illumination wire, and I don't believe that matters. Its a 4,6,8 cylinder model and the switch is set on 4.

09-22-2010, 03:38 PM	#14
CueBall Ruler of the free world Drives: 09 Yaris 2D HB Join Date: Jul 2010 Location: Utah Posts: 49	Fmicle, did you mount your tach in the glovebox? I cant see the pics.

09-22-2010, 03:42 PM	#16
sleey0 Drives: 2008 Yaris LB Join Date: Jul 2010 Location: PA Posts: 899	Wish some company would come out with a nice A pillar guage pod already lol. I am not a fan of drilling thru the driver's side compartment like that. I suppose even using guage pedastals and drilling them into the A pillar would work (garm had a pic and he did this with his tc IIRC).

09-22-2010, 04:10 PM	#17
maxxman420 prop215. Drives: Toyota Yaris LB Join Date: Sep 2010 Location: San Diego, Ca Posts: 52	i really need to do this. i have the same tach but in white. mine is just sitting where that johnson and johnson thing is sitting in the side cluster. haha

10-15-2010, 01:14 PM	#18
metalshark MetalShark Drives: 2008 Yaris LB Join Date: Oct 2008 Location: Mesa, AZ Posts: 104	Tach dreamer update: I've finished the 33 LED analog display installed in the display trim similar to my earlier BS2 tach. Those of you from the LA basin may have seen the only operational prototype of the gen 1 tach. I've finished the firmware (with the help of Prallax.com forum members) on a breadboard for a digital readout. It's running in my Yaris today. I'm changing the 4x7 segment display from red to green. I had a setback learning to solder surface mount chips for the analog display. I'll have to do a version 1.1 layout before it's kit ready. I love the headrest video camera mount I found here. When success is apparent watch for the video coming soon to a forum near you. __________________ Absolutely red, Drawtite hitch, CAI, Insulated Header, Amsoil 5w-30, Mag-drain plug, Red-Line MT-90 tranny oil, Scotch-Guard, Window Tint, Dash rug, Custom short throw shifter, Lowered OEM arm rest, Super-Turbo muffler/w chrome slash cut tip., TRD rear sway bar, sticky pads, front shock tower bar, RS grill badge, VVT-i emblems, Second tire set from Tirerack.com, DISABLED DAY TIME RUNNING LIGHTS, platform- style locking custom bike rack. 86K miles so far. 5 years use now on ceramic wrapped insulated stainless-steel header. Last edited by metalshark; 10-15-2010 at 01:15 PM. Reason: grammer

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