16 replies to this topic

[vermillion850]

hi all
fancy converting bog standard switches to old style lucas toggle switches
i have sourced mk1 switchplate , cables and switches
1 is a 3 way lucas switch obviously for head and side lights
other is an on / off which will use for rear screen demister
3 way has connectors 1,4,6,7,8
on / off has connectors 1,6,7,8
not bothering with hazardat moment as will prob get a lucas 33888 style one
have standard wiring for 1977 850 can supply colours i have if needed
if its a straight swap just need to know
....what colour wires go to which connections really? ? ?
any peeps help ??

Edited by vermillion850, 01 December 2012 - 02:02 PM.

[tiger99]

As always, use the Haynes manual. The wire colours are all shown.

[vermillion850]

thanks so it is possible to do a straight swap just wiring ?
many thanks

[vermillion850]

which wires go to which number connectors though ?

[vermillion850]

anyone ?

[vermillion850]

lights have a blue , red and brown wires (3)
rear de mister has 2 earths a green and a black wire (4)
just need to know which colours go to which numbers on lucas switches ?
ie red =1
help greatly appreciated anyone ?

[vermillion850]

is this right ?
power =1
sidelights=4
headlights=8

[vermillion850]

or is it
power=4
side=7
headlights=8
?????????

[tiger99]

Right, let's give him a hand with that, as Haynes only shows dynamos with toggle switches, and there are some minor differences, which will be confusing.

On the light switch, 4 is incoming battery/alternator power, which is brown on an alternator car but shown as brown/blue on dynamo diagram. 8 is headlight feed to dip switch, which is always blue. 1 is side/tail which is always red.

Wiper switch, 6 is incoming fused power, controlled by ignition switch, which is always green. 1 is red-light green and 8 is brown-light green to the wiper motor.

Try that and get back to us with any additional questions.

By the way, the toggle switches are better made than the later rockers, and more reliable.

Edited by tiger99, 02 December 2012 - 04:38 PM.

[vermillion850]

thanks so much tiger99 didnt think anyone was helping !
much appreciated thank you
sorted with the lights ...thanks
im actually using the other toggle for the rear screen demister
i have lucas on/off switch for that with 1,6,7,8 connectors
the 4 wires i have to connect are earth,earth, green,black?
any ideas tiger99 ?
thanks again for helping

[tiger99]

The heated rear window switch should have incoming fused and ignition controlled green, and a green-yellow to the rear screen, plus a second green-yellow on the same terminal to the warning light. Green on pin 1 and green-yellow on pin 4 according to Haynes. By "earth" I take it that you mean green-yellow as used on domestic wiring. Earths in the car are black. Now you may not have a warning lamp now, as it was built into the rocker switch, which is why you should have a spare black wire, and it is a good idea to fit one somewhere. There may be one or more spare warning light positions on your speedo, which could be used.

[vermillion850]

your a star !
thanks so much

[vermillion850]

tiger have sorted headlight switch with your help ...
but the heated rear window switch only has connectors
1,6,7,8
how can i attach the green yellow to 4 ?
if the green is on pin 1 which does the green yellow go to beings you helped me this far ?
cheers

[tiger99]

I am guessing that it is a wiper switch with pins 1, 6, 7 and 8, so it may give you an extra intermediate position which you will not want, if it was for 2 speed wipers. Anyway, it will still be able to work as a simple switch. It seems from Haynes that pins 7 and 8 are probably the two that you want, power in on any one (green) and the other to the rear window (green-yellow). If that does not work, try 1 and 8.

[vermillion850]

all sorted tiger it was 7&8 !
much appreciated you took the time to help me ...
many thanks again