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adding extra relay to hids

Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=120994
Printed Date: May 20, 2024 at 9:33 AM


Topic: adding extra relay to hids

Posted By: just_ed
Subject: adding extra relay to hids
Date Posted: March 26, 2010 at 5:01 PM

hey, okay so the problem is i have my bike with hids and added the relay harness from a car so now both my low and high beam are always on. does anyone have a diagram that would work to add a relay to make the high beam only go on when i push the highbeam button? if you have a better idea feel free to mention it. thats all i though of so far but i didnt get to drink my coffee yet LOL.
thanks guys



Replies:

Posted By: chawski
Date Posted: March 26, 2010 at 5:39 PM
the reason they are both coming on at the same time is that you have them wired how you would for a car, with 2 lights always ignited. You need to make a separate wire harness for each the lo and hi beam. As long as you use the factory plugs for each harness, they will work like they did in stock form




Posted By: just_ed
Date Posted: March 26, 2010 at 5:45 PM
yes i understand that is why they are working this way. but should i then wire two separate relay harnesses one for each? or is there someway to intertwine the hids into one harness to still work properly. i'm not sure if that made sense.




Posted By: chawski
Date Posted: March 26, 2010 at 7:50 PM
your easiest bet is gonna be one harness for lo's and one for hi's, each with their own relay.




Posted By: just_ed
Date Posted: March 26, 2010 at 8:01 PM
excellent reply. now my only other question would be do you have a diagram to build the relay harness? i know the bike has one on it but i do not have it near me to duplicate. i tried looking online but some were quite confusing and there were a few different ones it seemed. there were some put with diodes, some with capacitors. but there where no clear diagrams. any help? even just a quick write out if you have the time...thanks again




Posted By: chawski
Date Posted: March 26, 2010 at 9:38 PM
yea no problem. what size bulbs do your hi's and lo's use?




Posted By: just_ed
Date Posted: March 26, 2010 at 10:01 PM
i believe they are both h7




Posted By: just_ed
Date Posted: March 26, 2010 at 11:33 PM
also. wire gauge for the harness...what gauge would you say to use? and i read that the insulation of the wire actually matters more than the gauge because of the high voltage...what would you say to use? thanks again.




Posted By: chawski
Date Posted: March 27, 2010 at 11:15 AM
As far as wire goes, I usually use 12 or 14g (either is fine, just use what you can get your hands on for the cheapest)

Ill try and find you a pic to make this a bit easier, but for your relay, here is what is attached to each pin:
30 - + from battery, with 25 or 30A fuse
85 - run a wire to the positive plug on the stock female h7 plug
86 - this is your ground. on a motorcycle, its probably best to just run it to your negative on the battery, since the frame is exposed, scraping paint off is just asking for rust down the road
87 - this is your + to the ballast

does this make sense or no?




Posted By: just_ed
Date Posted: March 27, 2010 at 12:15 PM
ok i'm trying to picture this in my head. looks like a + to + boost relay right?...i think my only question is, poll 87 (+ to ballast) i will be wiring the relay directly to it correctly? (i.e. the relay poll 87 will be the only connection to the + ballast wire right?) and other question. the ground from the ballast, leave it going to the stock bulb plug? i think thats all the questions...hope they made sense...thanks a million




Posted By: just_ed
Date Posted: March 27, 2010 at 12:32 PM
or better yet. poll 86 ( the ground) can i run that to the stock bulb plug's ground terminal? i think that made sense.




Posted By: chawski
Date Posted: March 27, 2010 at 2:44 PM
yup, you got it...87 is the only source going to ballast. As far as ground, you can certainly send it to the negative on the plug, or you can send it back to the ground on your harness. Whatever is the cleanest looking and out of the way will work. I always just ground it to the frame, but again, Im not sure how goo an idea that is on a motorcycle with the frame being exposed to the elements.




Posted By: just_ed
Date Posted: March 27, 2010 at 2:46 PM
awesome. thanks alot. i'm going to go try it out now i think. i'll post up the explosion lmao. thanks again




Posted By: chawski
Date Posted: March 27, 2010 at 3:52 PM
haha gata love the fireworks

Honestly, its really not that hard. I know thats easy for me to say bc my dads an electrical enginner and helps me out, but once youve done it once (or in my case, messed it up once) theyr pretty much all the same.

Im still looking for that pic btw. I have one for a h4, and if i cant find the h7, ill just post that one. in the end, its gonna be pretty much the same




Posted By: just_ed
Date Posted: March 27, 2010 at 6:39 PM
ahh didnt get to do it today kinda sad. but its cold as hell and i had to go to a bbq lmao. didnt get to work on the bikes. i'll definitely post how it went though when i get the chance...




Posted By: chawski
Date Posted: March 28, 2010 at 8:01 AM
i hear ya man...im in philly. it was gorgeous last week and now back to february




Posted By: chawski
Date Posted: April 01, 2010 at 1:44 PM
any luck on that harness yet?





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