<VV> Fw: Corsa Dash Install questions

[J R Read]

Hi Leland,
That sounds to me like a bit of overkill - especially if his engine is not a 
turbo and if he did not change the tranny and (maybe - probably?) does not 
have the buzzer.  I see it as two wires and a vacuum line from engine to 
dash.  A wire for the thermister (to install in left head), a wire for the 
tach, and a line for the boost gauge (which will never read above zero in a 
non-turbo).  I see no need to change the wiring on the oil pressure sender 
and the temp switch in the right head.  Now, combining those two additional 
wires into the original front to back harness is really a matter of choice - 
primarily for appearance purposes.

Am I missing something?

Later, JR
CCE CORSA CORVANANTICS SCG member
'61 Rampside Standard 4/110 (Spyder Dash)
'65 Monza Convertible 4/140 (Corsa Dash)
"Keep the Love Alive"

----- Original Message ----- 
From: "Leland Garland" <lgarland1 at yahoo.com>
To: "VirtualVairs" <virtualvairs at corvair.org>
Sent: Monday, February 06, 2012 11:28 PM
Subject: <VV> Fw: Corsa Dash Install questions


I have been working on installation of a Corsa instrument panel into a '65 
Monza which originally had Powerglide but now has '66 Saginaw transaxle. I 
have modified the original wiring harnesses to accomplish this -- a lot of 
work.

First of all I added two wires to the engine harness: 1) Wire from negative 
side of coil for the tach, 2) New wire for temperature switch in right head 
(non-Corsa has only one wire for both oil pressure and head temp switches). 
Also added vacuum line from fitting on left head (I have '66 turbo engine).

Secondly, I added three wires to the main body harness: 1) New wire for the 
tach, 2) New wire for head temp switch, and 3) New wire for thermister in 
left head. Continued the vacuum line forwrd through the tunnel.

Thirdly, Added all three wires from the main body harness to the under-dash 
harness. Also had to tap into the wire from the head temp switch to add a 
new wire to go to the high temp buzzer, had to solder in a diode in the wire 
from the head temp switch (after the tapped connection just described (which 
prevents the buzzer from being energized by a no oil pressure condition), 
and then connect the wire from the thermister to the head temp switch wire 
(after the diode). Continued the vacuum line up to the Corsa instrument 
panel.

The under-dash harness also required modifications to eliminate the PG 
neutral safety switch and backup light switch. My transmission doesn't have 
a working backup switch but I'll have to modify the main body harness if I 
ever install a backup switch.


I don't know if this will be of any help to you, but at least you can get an 
idea of the work involved if you decide not to buy new harnesses -- all 
three of them.

Leland L Garland
'65 Monza
Phoenix AZ




In a message dated 9/20/2011 9:35:41 P.M. Eastern Standard Time,
dixon5553 at yahoo.com writes:

Would like to know what's involved with installing a Corsa dash in a Monza
- it's a 1966.
1. How do you attached this to the Monza's wiring harness so everything
works, what modifications are needed if any.