[T3] Porsche 914 tach on a 73 SB

73 squareback Cincy swaffordvw at cinci.rr.com
Sun Oct 23 12:15:34 PDT 2016

I played around with the tach and it works. so now i just have to figure 
out how to mount it. and run a few wires. But it is a working unit which 
is neat! I cant wait to install it. Just have to figure out how to mount it


On 10/23/2016 9:17 AM, Mike Fisher wrote:
> Will it fit in the clock hole?  Jeff Bowlsby makes/sells custom wiring
> looms for various cars and probably knows the answers to your questions.
> http://bowlsby.net/914/Classic/
> On Sun, Oct 23, 2016 at 6:04 AM, 73 squareback Cincy <
> swaffordvw at cinci.rr.com> wrote:
>> VW friend of mine told me to run the feed line off of the neg. on the
>> coil. I was gonna give this a shot. but i dont want to fry the tach so im
>> trying to be 100% sure.
>> It is a MT with 32pdsit carbs. No FI. So i guess ill have to do alittle
>> researching to make sure this is correct.
>> Chris537
>> On 10/22/2016 11:45 PM, Jim Adney wrote:
>>> On 22 Oct 2016 at 17:18, 73 squareback Cincy wrote:
>>> I came across a 914 tach, and would like to install it in my
>>>> Squareback since i always wanted a tech in it. Its been 25 years since
>>>> i had a tach in a VW so im asking, what is the best way to install
>>>> this dude for it to detect the RPM's? and is there any kits out there
>>>> where i can mount it under my dash or something?
>>> You would need to start by finding out how it was wiyred in a 914,
>>> then duplicating that in your Type 3. Our ignition systems are the
>>> same, so you would only need to duplicate the 914 wiring.
>>> You will need at least 1 extra wire running back to the engine. If
>>> your '73 is an MT, there will be one extra red wire that runs from
>>> (near) the fuel pump relay to near the oil cooler in back. All '70-3
>>> Type 3s got this wire, but only the AT cars used it. The engine end
>>> will be cut off. The dash end will be hanging freely or may be
>>> connected to the fuel pump relay.
>>> If it's too large to replace the clock, check your FLAPs for a
>>> mounting bracket, or make your own.
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