Aussieveedubbers 路 Tech Mods and Frequently asked Questions

Wiring up a tacho to a 6V bug

https://forums.aussieveedubbers.com/threads/23458/wiring-up-a-tacho-to-a-6v-bug

Dannyboy 路

What do i do? Asks for a 12v source!

Dan馃檪

seagull 路

Why has the motor more than 5000 rpm ?

BettyBoop 路

I'd love to know how to wire up a tacho to a 12v system 馃榾 so go for it! 馃榾 any one?


hehehehe

ciao
Kat:alien

Desert Moose 路

dannyboy67 wrote:What do i do? Asks for a 12v source!

Dan馃檪
Does the tach tell you how many amp's it uses as a 12v unit and has it got 3 or 5 wires

seagull 路

in side does it has a switch 6 volt /12 volt ? the one in my shed does

blutopless2 路

dannyboy67 wrote:What do i do? Asks for a 12v source!

Dan馃檪
you can always purchase a 6v-12v converter.

Dannyboy 路

It's a moon one , only as switch for 4,6 and 8 cylinders. Someone must have done this before! The wiring is simple enough just need to know about the power source and what i have to buy.

Dan馃檪

Dannyboy 路

blutopless2 wrote:
dannyboy67 wrote:What do i do? Asks for a 12v source!

Dan馃檪
you can always purchase a 6v-12v converter.


Are you sure 6v to 12v ? where would i get one please?

Dan馃檪

pod 路

someone selling one on forum for $50 last week i think i paid $70 for mine
http://www.aussieveedubbers.com/forum/viewthread.php?tid=23385#pid177635

[Edited on 28-5-04 by pod]

Dannyboy 路

Pod where did you buy yours from?

Dan馃檪

Desert Moose 路

Hey Dan are you sure this will work because the converter will power the tacho up ok but what about the power from the dizzy? It still will be 6v not 12v

pod 路

a guy up in Brisbane i think you can get them from Jaycar but about $150 but dont quote me on it

1303Steve 路

Hi

How many connections does it have and what type are they.

I have Stewart Warner tacho in my bug now (it was in my 1st bug in 1971) that only needs an earth & - from the coil, no voltage input. So it would run on any voltage.

1302Steve

Dannyboy 路

4 wires , this is what it says on the instructions

Black - to negative battery terminal or good chassis ground

Red - to switched 12v circuit at fusebox or splice into a wire which is engergized when ignition is on

White - to panel lights circuit at fusebox or splice into any wire connected to the panel lights circuit

Green - to the appropiate vehicle tachometer source

What do i do?

Dan馃檪

1303Steve 路

Well it looks like its a good time to do a 12 volt conversion.

Dannyboy 路

Thats going to happen when i get my new motor & box but thats not for a while . Will have to get a 6-12v thingos that pod was on about

Dan馃檪

Dannyboy 路

Has anyone used a converter and ran a tacho from it. Desert Moose has a good point!

Dan馃檪

matara 路

I have a VDO tacho thats 6v. Its from an old BMW from the early sixties but its very close to a VW one. Very nice unit.

Let me know if your interested and I'll dig it out and work out a price.

Cheers

Steve

Dannyboy 路

Okay managed to track down a converter but the owner ran a stereo and other gauges and not a tacho. So all i now need to know is where to put the wire on the coil and if it's going to okay as it's a 6V coil. Help please!!!!

Dan 馃檪

Dannyboy 路

Anyone know?

Dan馃檪

Desert Moose 路

Desert Moose wrote:
dannyboy67 wrote:What do i do? Asks for a 12v source!

Dan馃檪
Does the tach tell you how many amp's it uses as a 12v unit and has it got 3 or 5 wires
Look at this dan

blutopless2 路

dannyboy67 wrote:So all i now need to know is where to put the wire on the coil and if it's going to okay as it's a 6V coil. Help please!!!!

Dan 馃檪
The connection to the coil is only for the signal to the tacho. This pulse will tell the tacho how many rpm you are doing. It will not damage the gauge to connect to a 6v coil though depending upon the tacho you might not get enough voltage to get a reading.
Is worth a try to see what you get.
hth

Dannyboy 路

the tacho has 4 wires , ground , lighting , coil and 12v source. I can get an inverter for the 12v . So you reckon it's worth hooking it all up and seeing what happens?

Thanks Dan馃檪

Dannyboy 路

Desert Moose it doesn't say how many amps it uses and has 4 wires as mentioned earlier in the thread. Here's a pic of the tacho anyway!

Dan馃檪

Desert Moose 路

dannyboy67 wrote:the tacho has 4 wires , ground , lighting , coil and 12v source. I can get an inverter for the 12v . So you reckon it's worth hooking it all up and seeing what happens?

Thanks Dan馃檪
Yeh give it a go with the inverter to see if the pulse is strong enough. make sure you keep the light 12v as well and run it off the inverter.

Dannyboy 路

Cheers should be able to manage that!

Dan馃檪