Upgrading Driving Lights

[Half Assed]

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switch power from fusebox (like above):
-12 volts to the power lug on the switch
-ground wire on the ground lug
-wire to pin 85 (or 86 doesn't matter) to acc lug
-ground wire on pin 86(or 85)


OR

switch power from battery:
-12 volts to pin 85(or 86)
-pin 86(or 85) to the power lug on the switch
-ground wire on the ground lug
-ground wire on the acc lug

Relays are easy to understand:

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This picture is at a normal state. A relay is like an electromagnetic switch. When you apply power and ground to pins 85 and 86 a magnet flips the closed circuit from 87a to 87. So, in this picture, without power to 85/86 power added to 30 and 87a is a closed(on) circuit, and 30 and 87 is open (off).

By the way, the signal side of the relay(85/86) is very low amperage and I have used 22 ga wire to wire that circuit without problems.

 

[Half Assed]

If you wire it like the picture, 87A requires no wire on it.

First time I used relays a few years ago I made that mistake and took me a while to figure it out.

 

[bluex]

VL- use 12 ga wire those 100w bulbs are gonna use some power. I would probably use 10 personally but I go for overkill in these situations because I've melted to many switches an wiring by trying to save a buck or two...

 

[Vortec Lover]

VL- use 12 ga wire those 100w bulbs are gonna use some power. I would probably use 10 personally but I go for overkill in these situations because I've melted to many switches an wiring by trying to save a buck or two...

Right, I'm going to use 12 gauge... maybe 10... I was just wondering bout the switch side of the relay, since as Half-Assed said, they are just electromagnetic switches.

 

[Vortec Lover]

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GREEN: ground
RED: 10/12 gauge wire
BLUE: 16 gauge wire

so will this work?

 

[chevyman0191]

heres a wiring diagram that i used for my pro comps... the wiring diagram was made to run 2 135 watt bulbs but i changed them to 55 watt.

http://docupub.com/docs/526238cf-fe03-42ec-9b93-0da3721fe0d3/SCAN0001.pdf


edit: and i do have an inline fuse from battery to relay which the diagram does not show.... from your drawing looks pretty much the same... only thing I have had people tell me to get power for switch from battery but i did mine from fuse box easier and closer and had no problems.

 

[Vortec Lover]

heres a wiring diagram that i used for my pro comps... the wiring diagram was made to run 2 135 watt bulbs but i changed them to 55 watt.

http://docupub.com/docs/526238cf-fe03-42ec-9b93-0da3721fe0d3/SCAN0001.pdf

Thanks! Looks pretty much like what I had scribbled up. It's probably as easy as changing a tire, it's just so daunting to me that I want to know exactly what I am doing before I get into it

 

[chevyman0191]

Thanks! Looks pretty much like what I had scribbled up. It's probably as easy as changing a tire, it's just so daunting to me that I want to know exactly what I am doing before I get into it

no problem, yeah pretty simple jus do one wire at a time, ive done 2 sets of lights on 2 different vehicles with that diagram it isnt bad.

 

[bluex]

Right, I'm going to use 12 gauge... maybe 10... I was just wondering bout the switch side of the relay, since as Half-Assed said, they are just electromagnetic switches.

Oh my bad, ya you could use a smaller gauge wire to turn on the relays that doesn't require much current. I thought you were meaning the lights themselves.

 

[Vortec Lover]

Oh my bad, ya you could use a smaller gauge wire to turn on the relays that doesn't require much current. I thought you were meaning the lights themselves.

Thanks! Just confirming that.