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How to properly wire accessories?


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6 replies to this topic

#1 ellevehc

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Posted 06 August 2014 - 08:25 PM

I understand the basics of wiring but I am not very confident in it. Does anyone have any good links as to how and why wiring should be done a certain and safe way? My wiring goals will be pretty simple, O2 wideband sensor, and several LED light bars.

 

What I wanted to do was setup a separate stand alone fuse box and run everything off of that. So this way I could flip the O2 sensor on and off, lights on and off, etc. This way I do not end up splicing into and screwing up the stock wiring and most likely melting something. Has anyone done something similar?



#2 monstaru

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Posted 07 August 2014 - 08:29 AM

It's called google.



#3 El Presidente

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Posted 07 August 2014 - 09:19 AM

Your not going to be able to just hook an O2 sensor to led's and expect it to work.

 

Start here:

http://lmgtfy.com/?q...uel monitor kit

http://lmgtfy.com/?q...e wiring basics

 

Its that easy. Google is your friend

 

Josh



#4 MilesFox

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Posted 07 August 2014 - 10:21 AM

You will want to install a relay for each component as to not overdraw a switch or have heavy gauge wire come thru the cabin. If you are good, you can wire the driving lights to come on with the low or high beam using the headlight circuits to trip the relays. I have done this with a pair of driving lights to come on withthe high beam, tapping into a headlight socket, as the headlights are hot all the time, and ground thru the switch. The relay would be connected as a 'positive ground', and the driving lights connected to the battery normally. You will want a basic understanding of wiring schematics. Otherise, wire the relay to a toggle switch, and wire the driving lights to the to the relay.

 

For the wideband monitor, you will want to tie into the interior lamps to light up, unless you wire it up with the key.



#5 ellevehc

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Posted 07 August 2014 - 06:54 PM

It's called google.

 

 

Your not going to be able to just hook an O2 sensor to led's and expect it to work.

 

Start here:

http://lmgtfy.com/?q...uel monitor kit

http://lmgtfy.com/?q...e wiring basics

 

Its that easy. Google is your friend

 

Josh

 

Yeah I have been looking around at how other cars have setup theirs I just didnt know if any of the older model subarus on here had done stand alone fuse boxes. And yes I have searched the site for "stand alone fuse box". Nothing of value came up. 

 

You will want to install a relay for each component as to not overdraw a switch or have heavy gauge wire come thru the cabin. If you are good, you can wire the driving lights to come on with the low or high beam using the headlight circuits to trip the relays. I have done this with a pair of driving lights to come on withthe high beam, tapping into a headlight socket, as the headlights are hot all the time, and ground thru the switch. The relay would be connected as a 'positive ground', and the driving lights connected to the battery normally. You will want a basic understanding of wiring schematics. Otherise, wire the relay to a toggle switch, and wire the driving lights to the to the relay.

 

For the wideband monitor, you will want to tie into the interior lamps to light up, unless you wire it up with the key.

 

 

Yeah relays have come up a lot as I have been reading around. I would just want to set it up completely manual with a toggle switch on the headliner. O2 sensor I will try to wire separate as well, I want to try to prevent splicing directly into other wires. Getting them to come on with high beam does seem like a really convenient idea though. 



#6 Vegablade

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Posted 08 August 2014 - 06:19 PM

I used one of the Blue Sea fuse blocks and wired a large 8 guage wire to it behind a resettable fuse.  From there i used relays for the larger items like fans and lights.  I wire loomed all of the wires and zip tied them to the body so they don't get caught on things and then use heat shrink tubing on all of the connectors.

 

This is sans the fan wire harness.

Vyy5mK8.jpg



#7 ellevehc

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Posted 08 August 2014 - 06:45 PM

I used one of the Blue Sea fuse blocks and wired a large 8 guage wire to it behind a resettable fuse.  From there i used relays for the larger items like fans and lights.  I wire loomed all of the wires and zip tied them to the body so they don't get caught on things and then use heat shrink tubing on all of the connectors.

 

This is sans the fan wire harness.

Vyy5mK8.jpg

 

 

Awesome! Just what I was looking for. I will try to run a similar setup.






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