To go only a little off topic,, what is the name for the type of operation of the original /66 R.P. I know that it is not attached to the coil but to the back of the ignition switch (power) and although mine does not work (it does twitch once in a while), it must be connected to the wiring harness under the dash (a 1 into 3 style plug)?  Can it be changed to make it work better or is there a repair available or is that a lost art. Thanks.  Mark.

Mark Hone wrote:

To go only a little off topic,, what is the name for the type of operation of the original /66 R.P. I know that it is not attached to the coil but to the back of the ignition switch (power) and although mine does not work (it does twitch once in a while), it must be connected to the wiring harness under the dash (a 1 into 3 style plug)?  Can it be changed to make it work better or is there a repair available or is that a lost art. Thanks.  Mark.

 
It is a current driven tach, wired inline to the positive lead on the coil. For your '66 it is between the ignition switch and the pink resistance wire.

boomyal wrote:

OK, here is my bottom line question.  For my '65 'vert with the horizontal speedometer, do I want to use the earlier high profile rally pac with the bridge across the top of the steering column, or do I want to use the later V shaped rally pac?

So far, I have not seen any good front on pictures with the '65 style high bridge RPs on a car with the horizontal speedo.  Jeff in GA posted a nice pic of the later V shaped RP with a horizontal speedo but the picture of his bridge style RP was not front on,

Found these out there in the wild. Makes sense that the '65 gauges would sit a little lower, even you'd think that the taller bridge would make them higher, so's they wouldn't cover up the idiot lights on the '65 horizontal speedo panel.

'65 RP:

'66 RP:

Edit: Here's the forum post I snaggelated the pics from - http://www.mustang.org.au/forum/index.php?topic=21065.0

Last edited by McStang (12/19/2013 2:21 PM)