cred92

Okay soo i forgot on my old truck i had a set of piaa 510 foglights one bulb was blown from were i wrecked it. So tonight i picked up an h3 bulb from walmart so both lights work. I have never wired lights before but these have 12 or 14 gauge wire n thats what i plan to use. i also picked up an inline fuse holder and a switch, what else do i need to wire them and seriously how do i wire them up to work on the switch?

jason191918

get a relay as well. run a negative from battery to the first light, to the second light, to the relay. run a positive to the relay. run your switch across the coil side of the relay. make sense?

cred92

Okay soo just get a relay any specifics on that? And wire my lights pos and negative to the relay then wire the switch to the relay correct r no?

jason191918

like that. that way you don't have to run the 12/14 gauge through the firewall, or through the switch. just go to an auto parts store and tell em you want a relay for fog lights. where this guy tied into the you ign/battery, you could use a double throw switch and run it through the head light switch as well. that way push the switch up, and they are on/off w/ the head lights, push the switch down and they are on regardless.

snowshredder555

google BOSCH RELAY WIRING DIAGRAM. You'll find something to work perfectly...just dont run the load carrying wire through the switch...just the trigger wire for the switch to relay.

-Ted

cred92

Okay I wire the lights pos. to the relay neg to ground on battery, then wire pos. and neg from battery to relay then switch to relay why do I need to run the switch to the fusebox, won't I have the in line fuse between pos. on battery and relay?

snowshredder555

The wiring diagram above use's the positive for the switch from a keyed on accessory (spelling) inside the cab from under the dash...just one wire from the switch through the firewall....cleaner install and the wire through the firewall carrys a very low amp/ current. You just need a very low electrical signal to trigger the mechanism inside the relay to switch over and close the circuit. The fuse is between the Positive side of the battery and the relay...this will carry the main load and should be a 30 amp inline fuse...as said you've already picked up. Ground the lights to the frame. Also, in the diagram, you're probably not going to need the extra light that comes off the switch if you've already purchased a toggle switch that has an internal light...ie..lit when current is run to it and not lit when the fog lights are off.

-Ted

Sportsmanphil

To make it simple,

The relay is a switch. But the relay switch can pass a bunch more power than a little dash switch.

So your dash switch will turn on the relay switch, which will pass much more power through to the lamps allowing you to get full use from the high output bulbs.

So high battery voltage/amps will travel to the relay and wait until signaled to turn on by the dash switch. Then the good juice will be sent to the lamps.

If you were able to pass the power a relay can handle through a little dash switch, something will get melted.

Mount your relays close to the lamps, that way you will have less voltage drop.

A simple relay diagram as posted earlier is all you need.

cred92

okay soo im understanding a lil bit better, i plan to start this coming weekend after i pick up a relay. what other connecters or wire should i get and will this 12 r 14 gauge i found laying around the house work?

jason191918

Gauge 110V 12V
22 5A 5A
20 7.5A 8A
18 10A 10A
16 13A 20A
14 17A 40A
12 23A 60A
10 33A 100A

Your truck is 12V. 12ga wire can handle 60A at 12V (according to this chart I found). If you have that 30A fuse in there, you should be good w/ 12 or 14 ga.



Just pick up a kit like this. If you need it once, you will need it again. Hard to tell how many connectors you are going to break/drop/have your dog eat while you work on it. When you get the relay, you can buy the pigtail kit for it or use spade connectors. Hard to tell you what you need on the battery side...do you have a distribution block, screw terminal, etc? For the switch leg, you do not need wire this big.



This is a pic of a relay and the pigtail. With the pigtail you can solder and shrink wrap for a clean install, or just go with this approach:

cred92

Okay soo I found a wiring harness on eBay for 15$ that's a plug n play deal so that's the route I think I'm going. Comes with relay switch everything wired up n wrapped just gotta instal

Sportsmanphil

Chicken...................;-)

cred92

Hahaha true never done much wiring found this n seems cheaper n thicker wire then what I was planning to use, idk still undecided. Does anybody know of a lightbar for a 92 toyota pickup 4x4, don't really wanna drill holes in new bumper just getting replaced from getting backed into in parking lot

jason191918

I have a universal roof rack that I mounted 4 KCs on.

4ever4running

iTrader: (1)

If you are inexperienced and don't know much about wiring, your best bet would probably be to just order up a PIAA wiring harness like you said. It will be really easy to install because it should just be plug-and-play with your 510's. Here is a diagram of how I installed my PIAA 520's to my Yakima rack. I used the PIAA relays, but I had to completely modify the wiring harness because the PIAA harness was nowhere near long enough. Keep in mind that your install will be much easier because you only have 2 lights and 1 relay instead of 4 lights and 2 relays.



I used a factory fog light switch instead of the PIAA switch so I had to modify that part of the wiring harness just a bit. The PIAA switch is plugged into the wiring harness so that setup is easy but if you use any other 3 prong switch then the setup I posted above will work just fine.

cred92

Yea I've seen roof racks I kinda want something that mounts to the bumper or frame anybody seen anything? I am deciding to jus buy the kit I found it will hopefully work good, tested my light after putting my bulb in n works. I gotta find a set of the rock guards one got busted in the wreck I remember that it was way back

4ever4running

iTrader: (1)

It will have to be a custom job if you want to mount them to the bumper or the frame because I am pretty sure that there isn't any sort of vehicle specific mounting kit. Here are some ideas:

http://www.4runners.org/writeups/hella500/index.html

https://www.yotatech.com/forums/f116...a-500s-163291/

cred92

Yea my harness shipped out today, I'm thinking about drilling some holes in the stock bumper n puttin um in front of the grill. I wish I could find the rock guards can't find um anywere

4ever4running

iTrader: (1)

Yeah drilling the stock bumper is probably the best and coolest looking location

Here you go:
http://cgi.ebay.com/ebaymotors/PIAA-...Q5fAccessories

http://www.amazon.com/PIAA-45102-Bla...2700919&sr=8-1

http://www.4wheelparts.com/Lighting-...mpaign=Default

http://www.summitracing.com/parts/PIA-45102/

cred92

Thanks man I appreciate it I couldn't find any n I tried everything, I'm waiting on the other peoples insurance to pay n hopefully get my new stocky bumper on by Wednesday then start on bolting up lights n everything