HID fog lights using factory wiring
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Professional
Joined: Feb 2010
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From: New Bedford MA
HID fog lights using factory wiring
I just replaced my front bumper with a Iron Cross Bumper, Awesome btw. Any-who i was going to install 90MM HID into the 4" cutout in the bumper since factory fogs don't fit in there. I was wondering if i would be able to use the stock wiring and hook up the HID's to the factory wiring harness
Thread Starter
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Professional
Joined: Feb 2010
Posts: 139
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From: New Bedford MA
Moderate User
Joined: Oct 2008
Posts: 17,003
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From: Albany, NY
No issue on running HID's off the fogs as stated HERE
All Dodge Ram 2002+ have canbus system for their Headlights, therefore, the headlight circuit will need to be corrected. All Dodge Rams 2002-2008 DO NOT have canbus for the foglights.
I would still use a relay harness for the reason posted in the above link;
*Fogs are not canbus on any Ram 2008-older.
*You still should use a relay harness with the fogs even though they don't flicker/strobe when installing a pure Plug'n'Play kit. HID technology draws significiant amount of current upon start up to heat up the bulb. The Inrush current can be up over 15A on some of these kits and cause popped fuses or circuits to be electronically shut down by the tipm. Just because HID lights use Less power(35w) and draw less current at operating temperatures, doesn't mean they are safe for the electrical system which isn't designed for it. The High inrush spikes slowly wears down electrical contact points. This includes the headlight switch, the Instrument cluster, the fuse panl or 06-08+ TIPM($$) module.... They'll directly plug in and work like a charm, but for how long? I'd say it depends on the kit and how many times you turn the lights on/off?
Using a Relay harness avoids any hard strains on any of the factory components. Everything functions as it should and componenets will last much longer.
You can use your stock fog harness for the activation of the added relay harness which will retain factory controls of the on/off functionality.
All Dodge Ram 2002+ have canbus system for their Headlights, therefore, the headlight circuit will need to be corrected. All Dodge Rams 2002-2008 DO NOT have canbus for the foglights.
I would still use a relay harness for the reason posted in the above link;
*Fogs are not canbus on any Ram 2008-older.
*You still should use a relay harness with the fogs even though they don't flicker/strobe when installing a pure Plug'n'Play kit. HID technology draws significiant amount of current upon start up to heat up the bulb. The Inrush current can be up over 15A on some of these kits and cause popped fuses or circuits to be electronically shut down by the tipm. Just because HID lights use Less power(35w) and draw less current at operating temperatures, doesn't mean they are safe for the electrical system which isn't designed for it. The High inrush spikes slowly wears down electrical contact points. This includes the headlight switch, the Instrument cluster, the fuse panl or 06-08+ TIPM($$) module.... They'll directly plug in and work like a charm, but for how long? I'd say it depends on the kit and how many times you turn the lights on/off?
Using a Relay harness avoids any hard strains on any of the factory components. Everything functions as it should and componenets will last much longer.
You can use your stock fog harness for the activation of the added relay harness which will retain factory controls of the on/off functionality.
