1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Headlight Rewire With Relays

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  #1  
Old 07-12-2007, 10:34 PM
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Default Headlight Rewire With Relays

Has any of you 1stgenners done this mod? I have read about it but can't seen to understand the wiring diagrams. If any of ya'll can explain it in laymans terms.... please do!! Thanks
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Old 07-13-2007, 07:41 PM
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Got a new pair of 2 bulb headlights coming, is going to hook them up with a rely.
It is fairly simple, this will be some good reading, have fun.
http://www.rallylights.com/hella/Relays.asp
 
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Old 07-14-2007, 05:41 PM
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Got the relays done today, they look brighter in the daylight that before. Just waiting for dark to see the improvement!!
ez
 
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Old 07-14-2007, 09:40 PM
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sorry I didnt see it sooner. But for those who are wondering what your doing is instead of getting the power to light the bulbs in yer headlights directly from the headlight switch, on the stock puny wiring, what your doing is getting an alternative power source and using the headlight switch, for exactly that. A switch. And by using better wiring, and relays the added result is brighter lights, and the headlight switch running cooler, and longer.
 
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Old 07-15-2007, 10:14 AM
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No problem C_C. Your explaination about relays really helped though. It all makes sense now!!!
ez
 
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Old 07-15-2007, 11:11 AM
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Cool, glad I could help.
 
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Old 10-21-2007, 03:19 PM
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I updated to dual batteries and it also made a big diff!!!
ez
 
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Old 10-21-2007, 04:09 PM
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watch those Hella relays, ALOT of them come labeled wrong, i didnt pay attention and i couldnt figure out what they deal was when my fog lights wouldnt work, i finally figured it out.
 
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Old 11-09-2008, 09:09 AM
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blowing a little dust off of this thread, I was looking at the site that Saab9k posted a link to, didn't know Hella had some pretty cool options for lighting for our 1st gens. First is the Euro code housings for an H4 bulb conversion...gives you some pretty awesome bulb selection options and up to 110/85W lighting.

Or there's their DOT legal lense with a replaceable HB2 bulb, for a 60/55W hi/lo.

I just had a headlight go out, I'm going to just grab a cheapy at Napa for now 'cause I just got pulled over last night; but relays and some Hella lights seem pretty awesome, anyone tried either of these lights?

and what relay do I want to use? A SPDT (single pole - double throw)? I need to look at the wiring diagram in my service manual.
 

Last edited by greasemonkey; 11-09-2008 at 09:21 AM.
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Old 11-13-2008, 09:36 PM
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I have not done the relay's on the 1st gen yet, but I have Bosch E code headlights. (same as the Hella's but Bosch) I really like them. Much better foreground illumination, better vision in rain, snow, fog from the flat cutoff of the beam. Great highbeam. I recommend them.
 


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