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Wiring Help

Posted: Thu Jun 05, 2003 7:12 pm
by antt
hey guys i need a hand with some wiring..

i want to run a spottie on the back that will come on whenever i select reverse to make it easier to see at night, but i would also like to be able to switch it on and off whenever i like, even if the ignition is off and it's in neutral or first or whatever.

can anybody tell me how i would have to run the wiring to set this up?

Posted: Thu Jun 05, 2003 7:18 pm
by MissDrew
Get a 3 posi swtich, on that has on/off/on.
Then run from the standard reverse light wiring to one side of the switch.
Then run from battery to fuse to the other side of the switch.
Then run from the common (normally the middle prong) to the new light you install.
If its only one light and it is rated at a current draw of less then the current rating of the switch you want even need a relay.

Hope that makes sense.

Posted: Thu Jun 05, 2003 7:23 pm
by MissDrew
Doing it that way will allow you to select one of the following

have standard reverse light with new light when reverse is selected, switch in one of the on posi`s

Just standard reverse lights when reverse is selected, switch in off posi

Just the new light, switch in other on posi.

Posted: Thu Jun 05, 2003 8:18 pm
by big red
or run the wire from the centre terminal of the switch to the coil on a relay.

Posted: Thu Jun 05, 2003 9:35 pm
by purefmx
Its possible, ya need to have a tickler power wire triggered whenever reverse is selected, then constant power, depending on the wattage of the light run a relay, you'll only need to utilise one switch.

Posted: Fri Jun 06, 2003 7:30 am
by Wendle
do it how guts said. If you care about keeping it legal, you need an isolating switch outside the cab on the independant wire that runs straight to the battery. ie: you aint allowed to have a switchable white light on the back of a vehicle.

Posted: Fri Jun 06, 2003 8:54 am
by antt
so this is the way you reckon guts

Posted: Fri Jun 06, 2003 2:12 pm
by bj on roids
Guts wrote:Get a 3 posi swtich, on that has on/off/on.
Then run from the standard reverse light wiring to one side of the switch.
Then run from battery to fuse to the other side of the switch.
Then run from the common (normally the middle prong) to the new light you install.
If its only one light and it is rated at a current draw of less then the current rating of the switch you want even need a relay.

Hope that makes sense.


thats how mine are both done except add a relay, they stay on reverse, unless someone gets antsy behind me, and they get 300W, but you can select on all the time, off all the time and on for reversing.

Posted: Fri Jun 06, 2003 3:44 pm
by MissDrew
Yes but have a fuse in the new wire from the battery. The old standard light will allready have a fuse.

Posted: Mon Jul 19, 2004 2:05 pm
by barbz
no one has a finalised diagram using a relay?

Thanks

Posted: Mon Jul 19, 2004 8:40 pm
by ORSM45
i have.

Posted: Fri Jul 30, 2004 2:32 pm
by barbz
So with the reverse wire, what does that actually connect to? The positive wire from the reverse light? or is there something a bit closer to the cab?

Also if doing something similar for a set of front spotties where is the best place to locate the high beam wire for the switch?

Thanks

Barbz

Posted: Fri Jul 30, 2004 4:20 pm
by +dj_hansen+
Doesnt really matter.. mine is justbehind the light coz that was the easiet place to trace the wire to using a mutlimetre. But if you wanna fiddle around with the switch in the dash you can. Your only drawing enough current to trip the relay, which will be minimal.