Hi Scott:
That box is actually a voltage stabilizer. It provides 10 volts to the
fuel and water temperature gauges only and has nothing to do with the
speedometer or tack. You are right, all you need to do for those is hook
up the cables. Of course you want to be sure the drive cable (within the
plastic outer cable) is in place and lubed. Also be sure the tack cable
is actually connected to the distributor and that the speedometer cable
is actually connected to the transmission.
Hope this helps.
Jerry Judge
Jupiter, Florida
Scott's e-mail wrote:
>
> Hi all,
>
> After searching all my archives for info, I decided to toss this out for
> consideration. On the back of the speedo, there is a box with 4 electrical
> terminals attached. I understand this is a 'voltage regulator', but I don't
> understand what it really does. I can't seem to find anything about it in
> Haynes or Bentley. My question: what does the thing do, and could that
> contribute to why my speedo and tach don't work? Be aware that I just put
> the gauges back in after re-working the dash. I was under the assumption (I
> know, bad move) that these guys were purely mechanical, and that by
> connecting the speedo and tach cables I was good to go. Comments
> appreciated! Post to my e-mail or to the list if relevant.
>
> TIA,
>
> Scott Decker
> 70 GT6 KC79034L
> Braselton (Road Atlanta), GA
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