This is a multi-part message in MIME format.
--===============2552994496812089317==
boundary="----=_NextPart_000_0021_01D5986B.9B91E490"
This is a multi-part message in MIME format.
------=_NextPart_000_0021_01D5986B.9B91E490
charset="utf-8"
Content-Transfer-Encoding: quoted-printable
None of that is to do with the OD itself.
Which gears it operated on is a function of the linkages on top of the =
gearbox, and you can have it on 3 and 4 or 4 only as you wish. When the =
TCSA was introduced in late 76 to control 'surging' a third switch was =
added to the top of the gearbox that operated in 2nd and 4th, and this =
was wired in series with the OD switch operating in 3rd and 4th to =
produce a 4th gear only output controlling the TCSA and vacuum advance. =
I suspect that was not very reliable as it was an external micro-switch =
so it was deleted and the gearbox components changed so the switch =
operated in 4th only, as done to the V8 several years previously. The =
gearbox switch now controlled both OD and TCSA. =20
The gear lever itself changed for the 77 model year to incorporate the =
OD manual switch, but that can also be fitted to any year, or the 77 =
converted back to some other switch, as you wish.
The wiring prior to 77 was from the manual switch on the dash or the =
column, to the gearbox switch on a yellow and a yellow red, then from =
there to the solenoid. For 77 on it was from the ignition supply on a =
white to the gearbox switch, then from there to the manual switch on the =
gear lever, and from there to the solenoid.
Black label or blue label determines which speedo is compatible - black =
label was used on CB cars and used a 1280tpm speedo. Blue label was =
used on RB cars and used a 1000tpm speedo. But speedos can be =
recalibrated if you end up with the wrong combination.=20
So as a 78 it should have a blue label OD and the manual switch on the =
gear lever, as the column switch - which together with the plastic dash =
was new for the 77 model year - won't have that function. But if the =
car has the earlier RB dash and column switches you don't need the gear =
lever switch, which is prone to shorting out and causing harness damage.
PaulH.
----- Original Message -----=20
Not so much. It will be a a bit still until the transmission arrives. =
(Freight from NY to UT) I'm just trying to figure out which shifter it =
should have had as well as which gears it should work on. =20
I'm going to be putting it into a 78, but the current owner is still =
trying to track down the shifter from his friend, the previous owner. He =
doesn't know if it was a late shifter or an early one.
I'm trying to determine how to wire it in.
------=_NextPart_000_0021_01D5986B.9B91E490
charset="utf-8"
Content-Transfer-Encoding: quoted-printable
=EF=BB=BF<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Dutf-8" http-equiv=3DContent-Type>
<META name=3DGENERATOR content=3D"MSHTML 8.00.6001.23588">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT size=3D2>None of that is to do with the OD =
itself.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Which gears it operated on is a function of the =
linkages on=20
top of the gearbox, and you can have it on 3 and 4 or 4 only as you =
wish. =20
When the TCSA was introduced in late 76 to control 'surging' a =
third=20
switch was added to the top of the gearbox that operated in 2nd and 4th, =
and=20
this was wired in series with the OD switch operating in 3rd and 4th to =
produce=20
a 4th gear only output controlling the TCSA and vacuum advance. I =
suspect=20
that was not very reliable as it was an external micro-switch so it was =
deleted=20
and the gearbox components changed so the switch operated in 4th=20
only, as done to the V8 several years previously. The =
gearbox=20
switch now controlled both OD and TCSA. </FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>The gear lever itself changed for the 77 model =
year to=20
incorporate the OD manual switch, but that can also be fitted to =
any year,=20
or the 77 converted back to some other switch, as you wish.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>The wiring prior to 77 was from the manual switch on =
the dash=20
or the column, to the gearbox switch on a yellow and a yellow red, then =
from=20
there to the solenoid. For 77 on it was from the ignition supply =
on a=20
white to the gearbox switch, then from there to the manual switch on the =
gear=20
lever, and from there to the solenoid.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Black label or blue label determines which speedo is =
compatible - black label was used on CB cars and used a 1280tpm =
speedo. =20
Blue label was used on RB cars and used a 1000tpm speedo. But =
speedos can=20
be recalibrated if you end up with the wrong =
combination. </FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>So as a 78 it should have a blue label OD and the =
manual=20
switch on the gear lever, as the column switch - which together with the =
plastic=20
dash was new for the 77 model year - won't have that =
function. =20
But if the car has the earlier RB dash and column switches you =
don't need=20
the gear lever switch, which is prone to shorting out and causing =
harness=20
damage.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>PaulH.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV dir=3Dauto>Not so much. It will be a a bit still until the =
transmission=20
arrives. (Freight from NY to UT) I'm just trying to figure out which =
shifter=20
it should have had as well as which gears it should work =
on.
<DIV dir=3Dauto><FONT size=3D2></FONT><BR></DIV>
<DIV dir=3Dauto>I'm going to be putting it into a 78, but the current =
owner is=20
still trying to track down the shifter from his friend, the previous =
owner. He=20
doesn't know if it was a late shifter or an early one.</DIV>
<DIV dir=3Dauto><FONT size=3D2></FONT><BR></DIV>
<DIV dir=3Dauto>I'm trying to determine how to wire it=20
in.</DIV></DIV></BLOCKQUOTE></BODY></HTML>
------=_NextPart_000_0021_01D5986B.9B91E490--
--===============2552994496812089317==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Mgs@autox.team.net
Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/mgs/mharc@autox.team.net
--===============2552994496812089317==--
|