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Installing tachometer

 
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Old 01-13-2019, 10:13 AM
HVFDFIREFIGHTER1618
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Installing tachometer

I have a 53 Ford F500. How hard is it to install a tachometer to a truck that never had one installed?
 
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Old 01-13-2019, 10:17 AM
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It has the 215
 
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Old 01-13-2019, 10:28 AM
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Should be pretty simple, 12v pwr., grnd. and trigger to neg. side of coil..........mount the tach on the dash or steering column, it should come with brackets & instructions.
 
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Old 01-13-2019, 10:38 AM
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I should mention, itís a 6 volt system. Do they even make 6 volt gauges?
 
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Old 01-13-2019, 11:57 AM
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yes, I believe you can get 6v ,,,, Google it to find more info
 
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Old 01-13-2019, 02:42 PM
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Finding a 6 volt tach within your r/m operating range could be a challenge since your red line is 3,200 r/m. A 3,500 or 4,000 r/m would be your best choice. Another consideration is how obtrusive you want it to be. The column mounted 2" tach I use is very easily readable with a 270į sweep, but it's 12 volts. The 0-8,000 and up r/m tachs are almost dime-a-dozen and come in a variety of sizes from 2" to 5" diameter.
 
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Old 01-13-2019, 02:45 PM
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Originally Posted by Mixer man View Post
Finding a 6 volt tach within your r/m operating range could be a challenge since your red line is 3,200 r/m. A 3,500 or 4,000 r/m would be your best choice. Another consideration is how obtrusive you want it to be. The column mounted 2" tach I use is very easily readable with a 270į sweep, but it's 12 volts. The 0-8,000 and up r/m tachs are almost dime-a-dozen and come in a variety of sizes from 2" to 5" diameter.
i don't think red line is 3200 rpms. That is the rpm at peak HP. HP falls off above that but a 6 should easily turn 4500
 
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Old 01-13-2019, 03:22 PM
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Let us know if you find one. i have been looking for a 6 volt one also.
 
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Old 01-13-2019, 03:37 PM
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Originally Posted by bigwin56f100 View Post

i don't think red line is 3200 rpms. That is the rpm at peak HP. HP falls off above that but a 6 should easily turn 4500
I stand corrected. The red line is just before it comes from together. You aren't going to be operating in that range anyway and expect the engine to live.
 
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Old 01-13-2019, 05:30 PM
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Old 01-13-2019, 05:47 PM
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I was just wondering. I was thinking about replacing the entire instrument cluster.

I have seen instrument cutouts for 5 and 6 gauge setups. The 6 includes a tach.

If Iím doing new gauges, maybe I should convert to 12 volt?


Question; (I know this is going to sound stupid). if Iím out and about and the battery dies, I know I can do a rolling start (done that on other trucks). This being a six volt system can I use jumper cables from a 12 volt vehicle?
 
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Old 01-13-2019, 06:07 PM
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Originally Posted by HVFDFIREFIGHTER1618 View Post
I was just wondering. I was thinking about replacing the entire instrument cluster.

I have seen instrument cutouts for 5 and 6 gauge setups. The 6 includes a tach.

If it were me, I would convert to 12v

This is the gage panel I have now (the blank aluminum panel, no gages yet)





However, I am tempted to sell it and switch to this one:
from Classic Instruments They're not cheap but they're beautiful!
https://shop.classicinstruments.com/...-truck-package


 
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Old 01-13-2019, 07:17 PM
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Wow! The second one is a beautiful instrument cluster.

My original speedometer works. Gas gauge does not. I put new tank and new 6 volt sending unit. How do I check if it is the gauge or the sending unit. Maybe I do not have power to the cluster. The high beam indicator works canít remember off the top of my head but pretty sure oil pressure gauge works. Havenít had it running enough to move temp gauge. Donít seem to remember the voltmeter working either.

-11 out, too cold to go work in the garage.
 
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Old 01-13-2019, 07:35 PM
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To answer your question about using jumper cables with a 12 volt vehicle. I have owned my 54 since 1977. I have jumped it many many times with 12 volt cars with no damage to my truck. Once started, I take the cables off my truck first as quickly as possible. Now, might there be damage to modern cars today? Maybe....
 
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Old 01-13-2019, 07:35 PM
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Gas gauge is simple test. You can connect two jumper leads to a 9-Volt battery and briefly touch the poles of the gauge. If it works it will sweep. If it doesn't sweep one way, try reversing the wires. Do not leave them connected!!

I put a tach in my 1950 F1, which is still 6 volt. I had a hard time finding the one I wanted, so I went with an old war-time spec tach that was converted to solid state internals (not cheap), so the system voltage no longer mattered. Older cars that ran tachs had funky control boxes they wired into ("transmitters"), but you have to find one specifically for your engine size (ie: 4 cyl, 6 cyl or 8 cyl) and working vintage units are either VERY hard to find or VERY expensive.

Here's an example for a 6V 4cyl:
tachometer transmitter on ebay

But I think you may have answered your question about the 12V conversion after seeing those gauge clusters
 

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