Ignition Switch Connections

1962/64_Mechanical_Rev_Counter     1964/67_Mk1_Electronic_Tach     Mk2_1967/68     Mk2_1967/68_North_America     1969     1969_North_America     1970     1970_North_America     1971/72     1971_North_America     1972_North_America     1973     1973_North_America     1974     1974_North_America     1974_1/2_to_76     1974_1/2_to_75_North_America     1976/77_North_America     1977     1978_on     1978-on_North_America     V8    
1962/64 Mechanical Rev Counter

With the key inserted and turned to the first position (ignition) terminals 3 (brown) and 2 (white) are connected together.
When turned to the 2nd position (start) all three terminals are connected together.
With the key turned fully left or out of the lock all of the terminals are isolated.

1964/67 Mk1 Electronic Tach

With the key inserted and turned to the first position (ignition) terminals 3 (brown) and 2 (white) are connected together.
When turned to the 2nd position (start) all three terminals are connected together.
With the key turned fully left or out of the lock all of the terminals are isolated.

Mk2 1967/68

With the key inserted and turned to the first position (ignition) terminals 3 (brown) and 2 (white) are connected together.
When turned to the 2nd position (start) all three terminals are connected together.
With the key turned fully left or out of the lock all of the terminals are isolated.

Note: The Parts Catalogue indicates that MkII cars had the later 13H926 ignition switch with the 4th 'AUX' terminal, but the schematics don't show this being used until the 1969 model year.


Mk2 1967/68 North America

With the key inserted and turned to the first position (ignition) terminals 3 (brown) and 2 (white) are connected together.
When turned to the 2nd position (start) all three terminals are connected together.
With the key turned fully left or out of the lock all of the terminals are isolated.

Note: The Parts Catalogue indicates that MkII cars had the later 13H926 ignition switch with the 4th 'AUX' terminal, but the schematics don't show this being used until the 1970 model year.


1969

With the key inserted and turned to the first position (accessories) terminals 1 (brown) and 3 (dealer wired colour can vary) are connected together.
When turned to the 2nd position (ignition) terminals 1 3 and 7 (white) are connected together.
When turned to the 3rd position (start) terminals 1 7 and 6 (white/red) are connected together and terminal 3 is isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.

However whilst the diagram indicates there are seven electrical connections to the switch, a look at a switch will show that several of these are paired giving just the four electrical connections that one would expect. The picture below shows the brown and the next spade (non-factory wiring) being paired, then the next two terminals are paired (again non-standard accessory wiring), then the white/brown for the starter is on its own, then the last two are paired for white ignition wires (non-standard wires on the second of these). (Photo Peter Mayo)

1969 North America

With the key inserted and turned to the first position (ignition) terminals 3 (brown) and 2 (white) are connected together.
When turned to the 2nd position (start) all three terminals are connected together.
With the key turned fully left or out of the lock all of the terminals are isolated.

Note: The Parts Catalogue indicates that MkII cars had the later 13H926 ignition switch with the 4th 'AUX' terminal, but the schematics don't show this being used until the 1970 model year.


1970

With the key inserted and turned to the first position (accessories) terminals 1 (brown) and 3 (dealer wired colour can vary) are connected together.
When turned to the 2nd position (ignition) terminals 1, 3 and 7 (white) are connected together.
When turned to the 3rd position (start) terminals 1, 7 and 6 (white/red) are connected together and terminal 3 is isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.

Again refer to the photo above for the physical arrangement.


1970 North America

With the key turned to the first position (accessories) terminals 2 (brown) and 5 (white/green) are connected together.
When turned to the 2nd position (ignition) terminals 2, 5 and 3 (white) are connected together.
When turned to the 3rd position (start) terminals 2, 3 and 1 (white/red) are connected together and terminal 5 is isolated.
With the key turned fully left or out of the lock terminals 1, 2, 3 and 5 are isolated.

Showing the additional contact for the purple/pink wire - E. When the key is inserted a pin pushes the spring (arrowed) against the body of the lock to connect an earth to the wire, which if the driver's door is opened sounds the warning buzzer. Testing has shown that this only happens when the switch is in the 'OFF' position, however one would expect that it should also be operated in the accessories position. On the face of it, it doesn't need to be operated if the engine is running (should be obvious ...), but that still leaves the situation of no warning buzzer if the engine has stalled and the ignition is still switched on. (Arthur Johnson, restoring a 1972 ex-California GT in Australia)

1971/72

With the key inserted and turned to the first position (accessories) terminals 1 (brown) and 4 (white/green) are connected together.
When turned to the 2nd position (ignition) terminals 1, 4 and 2 (white) are connected together.
When turned to the 3rd position (start) terminals 1, 2 and 3 (white/red) are connected together and terminal 4 is isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.

May 2015: Note that this numbering may not be correct. The white wires are shown going to terminal 2 - four wires on two spade connectors. But one example of a switch from a 72 has terminals 1, 2, 3 and 4 with linked spades (which will be for the two connectors on the four white wires) on terminal 3. 73 and later schematics show the white wires on terminal 3, which would be correct for this switch, but the white/green for 73 and later is on terminal 5 and there is no terminal 4.


1971 North America

With the key turned to the first position (accessories) terminals 2 (brown) and 5 (white/green) are connected together.
When turned to the 2nd position (ignition) terminals 2, 5 and 3 (white) are connected together.
When turned to the 3rd position (start) terminals 2, 3 and 1 (white/red) are connected together and terminal 5 is isolated.
With the key turned fully left or out of the lock terminals 1, 2, 3 and 5 are isolated.
For the purple/pink see 1970 North America above.

1972 North America

With the key turned to the first position (accessories) terminals 2 (brown) and 5 (white/green) are connected together.
When turned to the 2nd position (ignition) terminals 2, 5 and 3 (white) are connected together.
When turned to the 3rd position (start) terminals 2, 3 and 1 (white/red) are connected together and terminal 5 is isolated.
With the key turned fully left or out of the lock terminals 1, 2, 3 and 5 are isolated.
For the purple/pink see 1970 North America above.

1973

With the key inserted and turned to the first position (accessories) terminals 2 (brown) and 5 (white/green) are connected together.
When turned to the 2nd position (ignition) terminals 2, 5 and 3 (white) are connected together.
When turned to the 3rd position (start) terminals 2, 3 and 1 (white/red) are connected together and terminal 5 is isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.

1973 North America

With the key turned to the first position (accessories) terminals 4 or 2 and 5 (white/green) are connected together and terminals 4 or 2 and 6 (slate or grey) are connected together.
When turned to the 2nd position (ignition) terminals 4 or 2, 5 and 3 (white) are connected together, and terminal 6 is isolated.
When turned to the 3rd position (start) terminals 4 or 2, 3 and 1 (white/red) are connected together and terminals 5 and 6 are isolated.
With the key turned fully left or out of the lock terminals 1, 3 and 5 are isolated, and terminals 4 or 2 and 6 are connected together.
For the purple/pink see 1970 North America above.

1974

With the key inserted and turned to the first position (accessories) terminals 2 (brown) and 5 (white/green) are connected together.
When turned to the 2nd position (ignition) terminals 2, 5 and 3 (white) are connected together.
When turned to the 3rd position (start) terminals 2, 3 and 1 (white/red) are connected together and terminal 5 is isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.

1974 North America

My wiring diagrams do not show terminal numbers for this lock.
With the key turned to the first position (accessories) the brown (12v), white/green (accessories) and slate or grey (anti-runon valve) wires should be connected together.
When turned to the 2nd position (ignition) the brown, white/green and white (ignition) wires should be connected together and the slate or grey wire should be isolated.
When turned to the 3rd position (start) the brown, white and white/red (starter) wires should be connected together and the white/green and slate or grey wires should be isolated.
With the key turned fully left or out of the lock the white, white/green and white/red wires should be isolated and the brown and slate or grey wires should be connected together.
For the purple/pink see 1970 North America above.

1974 1/2 to 76

With the key inserted and turned to the first position (accessories) terminals 2 (brown) and 5 (white/green) are connected together.
When turned to the 2nd position (ignition) terminals 2, 5 and 3 (white) are connected together.
When turned to the 3rd position (start) terminals 2, 3 and 1 (white/red) are connected together and terminal 5 is isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.

1974 1/2 to 75 North America

My wiring diagrams do not show terminal numbers for this lock.
With the key turned to the first position (accessories) the brown (12v), white/green (accessories) and slate or grey (anti-runon valve) wires should be connected together.
When turned to the 2nd position (ignition) the brown, white/green and white (ignition) wires should be connected together and the slate or grey wire should be isolated.
When turned to the 3rd position (start) the brown, white and white/red (starter) wires should be connected together and the white/green and slate or grey wires should be isolated.
With the key turned fully left or out of the lock the white, white/green and white/red wires should be isolated and the brown and slate or grey wires should be connected together.
For the purple/pink see 1970 North America above.

1976 to 77 North America

My wiring diagrams do not show terminal numbers for this lock.
With the key turned to the first position (accessories) the brown (12v), white/green (accessories) and slate or grey (anti-runon valve) wires should be connected together.
When turned to the 2nd position (ignition) the brown, white/green and white (ignition) wires should be connected together and the slate or grey wire should be isolated.
When turned to the 3rd position (start) the brown, white and white/red (starter) wires should be connected together and the white/green and slate or grey wires should be isolated.
With the key turned fully left or out of the lock the white, white/green and white/red wires should be isolated and the brown and slate or grey wires should be connected together.
For the purple/pink see 1970 North America above.

1977

My wiring diagrams do not show terminal numbers for this lock.
With the key inserted and turned to the first position (accessories) the brown (12v) and white/green (accessories) wires should be connected together.
When turned to the 2nd position (ignition) the brown, white/green and white (ignition) wires should be connected together.
When turned to the 3rd position (start) the brown, white and white/red (starter) wires should be connected together and the white/green wire should be isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.

1978-on

My wiring diagrams do not show terminal numbers for this lock.
With the key inserted and turned to the first position (accessories) the brown (12v) and white/green (accessories) wires should be connected together.
When turned to the 2nd position (ignition) the brown, white/green and white (ignition) wires should be connected together.
When turned to the 3rd position (start) the brown, white and white/red (starter) wires should be connected together and the white/green wire should be isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.

1978-on North America

My wiring diagrams do not show terminal numbers for this lock.
With the key turned to the first position (accessories) the brown (12v), white/green (accessories) and slate or grey (anti-runon valve) wires should be connected together.
When turned to the 2nd position (ignition) the brown, white/green and white (ignition) wires should be connected together and the slate or grey wire should be isolated.
When turned to the 3rd position (start) the brown, white and white/red (starter) wires should be connected together and the white/green and slate or grey wires should be isolated.
With the key turned fully left or out of the lock the white, white/green and white/red wires should be isolated and the brown and slate or grey wires should be connected together.
For the purple/pink see 1970 North America above.

V8

My wiring diagrams do not show terminal numbers for this lock.
With the key inserted and turned to the first position (accessories) the brown (12v) and white/green (accessories) wires should be connected together.
When turned to the 2nd position (ignition) the brown, white/green and white (ignition) wires should be connected together.
When turned to the 3rd position (start) the brown, white and white/red (starter) wires should be connected together and the white/green wire should be isolated.
With the key turned fully left or out of the lock all of the terminals are isolated.