S/W electric speedo wiring

[Topsterguy]

I'm rewiring my 32 and it has older S/W gauges including an electric speedo. On the back of the speedo there are 4 terminals - Aux , Sig , Pos , Neg. There's a "speed generator interface" box that the wires apparently go into before going to the speedo. The markings on it are  "12V", GRND, SIG IN, SIG OUT 1 , SIG OUT 2, and SIG OUT 3. There were 2 wires from the trans fitting , one went into " SIG IN" on the box, the other went into GRND on the box and a wire was spliced into the one that went into GRND and I think went to the speedo. A wire from SIG OUT went with that ground wire poss to the speedo.  I tried for a diagram at S/W but nothing. Anyone know the wiring for the box and the speedo? :?

[art.flame]

It can't be that hard i'm using new gauges from classic instrument that work about the same.
the wires from the trans are one signal and ground + and -
they are conected to the speed generator interface ,
the input trans + goes to sig in
sign out goes to speedo sig in
+ and ground need to be connected
you won't need the rest they are probably for extra acc
speedo:

12v  =12 volt switched
neg  = ground
sig-in= signal out from speed generator
aux  = not used

speed generator:
12v      =12volt switched
grnd     = - and neg trans
sig input=pos trans
sig out1 = sig in speedo
sig out2 = extra or cruise
sig out3 = extra could be used (if 12v delivered) for auto doorlock at speed
hope this helps

[enjenjo]

Signal out 2 and 3 can run a second speedo, input a signal to a computer, or control a cruise control.

[Topsterguy]

Great, as always thanks guys!  I didn't figure it was "hard" but I hadn't seen one with this " interface box" before , the one I had before just had the 2 wires up from the trans ( no polarity so didn't matter which went where) then pos to power and neg to ground off the back of the speedo.  Not being a wire wizard it pays to check, so thanks again!  Larry

[GPster]

Signal out 2 and 3 can run a second speedo, input a signal to a computer, or control a cruise control.

For cruise control and locking the torque converter? GPster