88AMComanche Posted October 4, 2011 Share Posted October 4, 2011 hope this aintt a repost. ...........Ive had foglights on my truck almost 8 months now & havent even wired them up yet. Ive been poking around reading all kinds of jeep forums & every one of them always brings up running wires to the Relay thats under the hood and talking about pin # 5 and pin#38 etc etc CoNfUsIng stuff to me. Since i have an INLINE 25amp fuse,can't i just wire them up to the factory swicth?? maybe the wires go to a relay already for all I know. I have 3 wires coming FROM the switch & do know the Green wire is Hot with the key on. can't i just take my Hot white foglight wire & run it TO that green Hot wire on the swicth?? Relly hope someone can simplify this for me. The bolts on my new lights are starting to rust & i havent even used them yet. Link to comment Share on other sites More sharing options...
CGross Posted October 4, 2011 Share Posted October 4, 2011 Easiest way to wire up a relay: http://www.classictruckshop.com/clubs/e ... glites.htm Relay is a LOT safer and more practical than having 25 amps of power coming straight to your factory switch. Link to comment Share on other sites More sharing options...
88AMComanche Posted October 4, 2011 Author Share Posted October 4, 2011 Easiest way to wire up a relay: http://www.classictruckshop.com/clubs/e ... glites.htm Relay is a LOT safer and more practical than having 25 amps of power coming straight to your factory switch. Well its just a 25amp inline fuse. I'm assuming only 12 volts would be going to the switch. I don't know for sure,but it may already go to a relay somewhere cuz Id be tieing into the factory Foglight switch wire thats already there. Link to comment Share on other sites More sharing options...
88AMComanche Posted October 4, 2011 Author Share Posted October 4, 2011 Easiest way to wire up a relay: http://www.classictruckshop.com/clubs/e ... glites.htm Relay is a LOT safer and more practical than having 25 amps of power coming straight to your factory switch. Well its just a 25amp inline fuse. I'm assuming only 12 volts would be going to the switch. I don't know for sure,but it may already go to a relay somewhere cuz Id be tieing into the factory Foglight switch wire thats already there. ALSO..........What if I DO find a foglight relay (wherever it might be hiding) .....How do I run a wire to it?? Just strip the lead wire & wrap it around the relay metal prong? Link to comment Share on other sites More sharing options...
jimoshel Posted October 4, 2011 Share Posted October 4, 2011 Something a lot of folks overlook when they're having electrical problems is battery height. In your case the fog lights are lower than the battery so the electrons (Amperage) will be going faster than normal. Thus generating more energy. When the electrons flow uphill say to overhead cab lights then they are bucking gravity and go slower, thus less energy to the lamps. Since the majority of appliances, headlights, tail lights, radio, etc, are on the same plane as the battery there is no noticeable problem. :hmm: Link to comment Share on other sites More sharing options...
MJCARENA Posted October 4, 2011 Share Posted October 4, 2011 Something a lot of folks overlook when they're having electrical problems is battery height. In your case the fog lights are lower than the battery so the electrons (Amperage) will be going faster than normal. Thus generating more energy. When the electrons flow uphill say to overhead cab lights then they are bucking gravity and go slower, thus less energy to the lamps. Since the majority of appliances, headlights, tail lights, radio, etc, are on the same plane as the battery there is no noticeable problem. :hmm: Was this post before or after you hit your head. :rotf: Link to comment Share on other sites More sharing options...
87Warrior Posted October 4, 2011 Share Posted October 4, 2011 Send RockMJ a pm and ask about how he wired up fog lamps using a factory switch and wiring. You should never wire electronic accessories straight to the battery, even with a fuse. Volts are not the same as amps. Relays can be a bit confusing at first. Study how they work and you will be doing safe wiring in no time. Jim... :jump: Link to comment Share on other sites More sharing options...
Jerry Posted October 4, 2011 Share Posted October 4, 2011 Thanks for giving me a good morning chuckle Jim :clapping: Link to comment Share on other sites More sharing options...
Blue88Comanche Posted October 4, 2011 Share Posted October 4, 2011 viewtopic.php?f=2&t=31495 Link to comment Share on other sites More sharing options...
Jeep Driver Posted October 5, 2011 Share Posted October 5, 2011 You can pick up a relay at any auto store for $5. I have my driving lights/fog lights wired from the parking/brights circuit. The relay will have 5 pins, power in, power out, ground in/ground out, trigger. Attach the relay to your fender wall near the battery. Power and ground in direct from the battery. Power and ground out direct to lights, 14ga. Trigger from light circuit or ignition circuit, or direct power circuit from dash switch or preexisting fog/driving lamp circuit. This is not complicated at all, fast, easy, safe, and will supply sufficient amps to power your lamps. My electric fan circuit is run the same way. Use simple protected female spade connectors and make up your own harness. You can also run your trigger through a dash switch so the you can manually disrupt the trigger at anytime. Link to comment Share on other sites More sharing options...
Eagle Posted October 5, 2011 Share Posted October 5, 2011 Something a lot of folks overlook when they're having electrical problems is battery height. In your case the fog lights are lower than the battery so the electrons (Amperage) will be going faster than normal. Thus generating more energy. When the electrons flow uphill say to overhead cab lights then they are bucking gravity and go slower, thus less energy to the lamps. Since the majority of appliances, headlights, tail lights, radio, etc, are on the same plane as the battery there is no noticeable problem. :hmm: Whatever you're drinking, I'll try one. Link to comment Share on other sites More sharing options...
Blue88Comanche Posted October 5, 2011 Share Posted October 5, 2011 Something a lot of folks overlook when they're having electrical problems is battery height. In your case the fog lights are lower than the battery so the electrons (Amperage) will be going faster than normal. Thus generating more energy. When the electrons flow uphill say to overhead cab lights then they are bucking gravity and go slower, thus less energy to the lamps. Since the majority of appliances, headlights, tail lights, radio, etc, are on the same plane as the battery there is no noticeable problem. :hmm: Whatever you're drinking, I'll try one. :clapping: :rotfl2: Link to comment Share on other sites More sharing options...
Eagle Posted October 6, 2011 Share Posted October 6, 2011 Seriously, always run fog (and/or driving or off-road) lights through a relay as well as a fuse. On my '88 MJ that once had factory fogs (but not when I got it), the relay is on the left radiator support, right next to the driver's side radiator tank. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now