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Old 08-24-2005, 04:24 PM
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Hooking up tach on a 6v system

So I'm an idiot, I bought a 12v tach on sale but realized to late I have a 6v truck...will it work? Is there anything I can do to have the tach run on 12v's?
I dont wanna bring it back since I cant find any other 6v tachs and it was a good deal (4" tach for $15).





Mike

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Old 08-24-2005, 05:17 PM
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I thought we went all through this last week...................

Chances are, you won't find a 6 volt tach anyways. Why not just keep it until you convert the truck to 12 volts.
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Old 08-24-2005, 05:39 PM
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Yes we did go through all this, but that was for CB, I was hoping the tach didnt require THAT much juice and might be fine running on 6v's....guess not?




Mike
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Old 08-24-2005, 08:22 PM
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Ya got a flat 6, and a 3spd crash box, it's no 1/4 mile monster so what good would the tach be. you just need a good ear to tell you when to shift. If your trying to time it with the rpm's ( basicly when it hits the optimal 800 at idle, and smooth idle ) , don't. ya can use a vac/ fuel pressure testor and just time it until you get the best vacume. If ya wanted to really have a tach, probably old jags and other forigne sports cars had 6 volt and tachs, VW bettles remained 6v until 1967, maby 1 of those had a tach. But for your case it is impracticle.
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Old 08-24-2005, 10:04 PM
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I dont need a tach really, but I want one you know? My moms car doesnt have a tach and shifting is easy to do it by hearing, same with my truck, but I just want a tach.......and I found the solution. Found a battery that has split volts, one side 6v one side 12v



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Old 08-25-2005, 08:44 PM
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Quote:
Originally Posted by Nightfire
I dont need a tach really, but I want one you know? My moms car doesnt have a tach and shifting is easy to do it by hearing, same with my truck, but I just want a tach.......and I found the solution. Found a battery that has split volts, one side 6v one side 12v



Mike
Still won't work tho, it uses the ign system is still 6v, it in theroy will read half the RPM's you have. Hooking up a dual volt battery to the ign system through the tach, won't do anything because it reads basicly how many times it hits #1 I think, there is no connection through the battery, only the ign readings and ign system. you might think about a mech tach, if you are staying 6v, if not, wait until you switch to hook it up.
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Old 08-26-2005, 02:00 AM
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re hooking up a tach on a 6 volt system

I bought a 6 volt tach last year from Westberg Manu. in Sonoma CA phone no. 707 938 2121. Maybe they can solve your problem. stens47
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