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ddgonzal
B210 Tachometer
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All you ever wanted to know about the B210 factory tacho...

There are four different ones for early B210

1. B210 kaku dash (rectangle gauge dash) Sedan DX, Sedan GL
2. B210 maru dash (round gauge dash) GX Sedan & Coupe
3. round GL Coupe tachometer
4. rectangle Tach-Volt meter

24855-H5700 GX 6800 rpm redline
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24855-H5000 OPTION Van, Sedan non-GX
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24860-H5000 TACHO. VOLT METER
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These early B210 gauges:
* single-wire bullet connectors (B110 wiring style)
* single-tabs at top and bottom to fasten tacho to dash

Attach file:


jpg  12133.jpg (36.03 KB)
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Posted on: 2019/6/16 8:05
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ddgonzal
Re: B210 Tachometer (early) wiring
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These black & white photos are from the B210 Option Parts and Installation book

Quote:
(How to install the tachometer)
* After removing the cluster lid, connect the tachometer wires to the printed-wiring connectors on the meter side, and with the tape winding (black and white wires) of the instrument harness.


1. Tach wires connect to the speedometer terminals
* Earth (black wire)
* Power +12V
* Lamp wires (spade connector)

2. Tach pulse detection BLACK/WHITE wires connect to the wiring harness BLACK/WHITE wires. If the car never had a tacho, locate the wire tape, unwrap it, then pull the two wires apart

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jpg  Tachometer Wiring.jpg (78.64 KB)
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jpg  タコメーター配線.jpg (75.62 KB)
174_5d06045d93f9c.jpg 763X558 px

Posted on: 2019/6/16 9:57
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ddgonzal
Re: B210 Tachometer (early) wiring
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last photos. The full text is at B210 Option Parts#Tachometer (and Tach-Volt Meter)

Attach file:


jpg  タコメーター配線、接続要領.jpg (75.52 KB)
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jpg  Tachometer wiring, connection points.jpg (101.54 KB)
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jpg  Page 27.jpg (177.69 KB)
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Posted on: 2019/6/16 23:00
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ddgonzal
Re: B210 Tach-Volt Meter (early)
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color photo

Push the button to switch to Volts display

Attach file:


jpg  24860-H5000.jpg (103.03 KB)
174_5d095bf4bd3b5.jpg 800X616 px

Posted on: 2019/6/18 22:48
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datsa73
Re: B210 Tachometer
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I remember that tach.
Took me 6 months and every wrecking yard between Olympia and Bellingham to find one. 😀

Posted on: 2019/6/23 17:20
_________________
'73 2 Door Sedan
KA24DR, Twin Webers 38/38 Sync.
Crower Stage 3 Cams/SS Valves
Forge CP Pistons/ Eagle Rods
Eaton M62 SC 10 lbs. Boost / 150hp Progressive Nitrous
GM 2 Speed Poweglide/Transbrake 3500 Stall
Ford 8.8 Posi/4.11
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SunnyDaze
Re: B210 Tachometer
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I believe we what have here is a B210 round tach on the left, and a B211 on one the right. Note the different wiring. The B211 one looks like a one wire tach. It has a single black/green wire. The B210 one has a pair of black/white wires.


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Posted on: 2019/10/21 10:28

Edited by SunnyDaze on 2019/10/21 10:56:40
Edited by SunnyDaze on 2019/10/21 10:56:59
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SunnyDaze
Re: B210 Tachometer
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I'm wondering if the one wire type is for electronic ignitions. An EI doubles the number of amps to the two wire tach, as it runs in series with the coil. And installing an EI is known to fry the factory tach.

Posted on: 2019/10/21 12:00
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ddgonzal
Re: B210 Tachometer
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The newer tach uses a voltage wire, that's the kind I sometimes hear about not working with Electronic Ignition. Never ran into a problem with it

The older tach used a current loop (two B/W wires)

Posted on: 2019/10/21 20:57
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edp
Re: B210 Tachometer
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was the "Volts" one a digital display? it looks like the word volt is done in that old plastic tape with the raised white letters...

Posted on: 2019/11/21 22:45
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ddgonzal
Re: B210 Tachometer
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youre right I didn't notice it looks like a Dymo label

the volt-tachometer had the button you press and it read out volts while pressed. it appears to say 'charging' and 'starting'

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jpg  volts readout.jpg (29.58 KB)
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Posted on: 2019/11/21 23:56
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