Headlight issues

[Jeff C]

I bought a set of low and high beam led bulbs. Installed the low beam and they work fine.  Went and installed the high beam and none of them worked, no lights at all.  But put the old high beams back in and they work again.  What could be the issue

[Doug_Scott]

Do the bulbs use a weatherpak connector, or did they come with an adaptor?  If they use an adapter can you flip the adapter over on the bulb?  LED are polarity sensitive and will not work if connected backwards.  

[Jsdirt]

Another possibility is that the lights are junk right out of the box.  Happens ALOT these days, even with OE parts. Sign of the times ...

[Jeff C]

What about bypassing the ground wire right to the frame.  Someone told me that I might have to do that

[Doug_Scott]

Don't see why that would be necessary if standard bulb is working.  Take an ohm meter and check the resistance between the ground side of the headlight connector and negative battery post or chassis.  Suggest you also try simply connect the bulb directly to the battery to see if it works.  Odds of getting two bad bulbs is very minimal, but, that's why they have warranty.  Do these bulbs have a weatherpak connector only or do they have a removable patch cable on them? 

[Jeff C]

The damn Chinese that eBay deals with wired them backwards hahaha,  I flipped them them around and they work!  Lol weird! 

[Jsdirt]

HAHAHA!  Oh, I've been there MANY times! Glad you figured it out. 

 

Last time I bought anything electrical from eBay was a pair of e-code headlight housings for our '93 Volvo 940 - looked like a 4 year old glued them together. Glue was EVERYWHERE. Were also wired completely backwards -  not just hi/low, but the fog / driving light feature was also backwards! Installed them, and couldn't get light more than 10' in front of the car with the adjustment maxed out! Was so mad - had to argue and fight with the seller too. Finally just opened a case, and got my money back - unfortunately I couldn't leave negative feedback since I opened a case. Was too bad - they were great looking lights. Ended up buying OE for double the money. OUCH is all I can say there ...

 

 

 

Before that, I bought a complete HEI distributor for my '00 Jimmy 4.3 V6 that I swapped to my '89 S10 Blazer, minus it's electronics. Complete HEI distributor for $60 shipped, lol. Well, the first one I got 8k miles out of - that was a record. The next lasted just over 3k miles. Really pulled my hair out on that one! Since it was an engine swap AND fuel system re-engineering, I was hyper-focused on the fuel system for 11k miles - was having nothing but trouble! Hard starts, random misfires, bucking at random times, and other days it would run great. Once the thing finally croaked completely (in the rain on a Sunday NIGHT, pitch dark!),  I replaced the electronic guts with Eichlin components from NAPA, that truck gained 3 mpg, about 30 HP, and started and ran better than anything in my fleet! Unfortunately, had to part with it, due to succumbing to liquid car dissolver MA dumps on the roadways every winter.