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510: Troubleshooting lights


Dzaster

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On my wagon the low beams started working intermittently until not where it doesn't work at all. High beams still work.

 

I opened up relay cleaned contacts and still low not working.

 

Lights work as I hook them up straight to a spare battery pos and neg. 

 

When DMM'ing the low beam pins I get roughly 12V on both terminals. Red/blue wire is supposed to be negative I'm reading. That's not the case though.

 

Perhaps the relay has an internal short I can't easily see?

 

 

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the lows will have 12volt on all sides on 3 prong using a volt meter or a test light(light up). If yes then the fuse box side is good.

One side should go to ground when you pull the switch ON.(means the test light goes OFF and or read close to Zero volts on one wire.IF no this is your proplem

Now the relay has a pass thru that routes power thru it or really to GROUND to complete the circut. and when you hit the Highs it puts a double ground on both low and inner highs.Iff all lights work On highs then its has to be the passthru ground. as your low lamps have 2 elements and it switches one side to the other. Test your skill on the highs to get a example what to look for. This is simple.

 

wiggle and clean the relay connectors and There is a ground by the volt reg and I heard there is a ground by the hood release also cfor the light swtich(havent needed to ck this for sure/ and not positive on this).

 

Most time its just a relay issue or owner has to much Pakalolo

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No pakas with me, perhaps the PO., but they worked fine up until recent.

 

So tested the low lights 3 prongs and they all show 12V when I put it to regular low lights. From what you're saying one should switch to ground. Thats not the case though.

 

When i switch to high beams the top terminal of 3 prong goes mV, nearly zero V. Aat same time when I test the inner high inner lights both prongs remain at around 10V.

 

So i overlooked something. The inner(high) lights dont work at all. When I switch on highs then the outer(low) lights come on. Just little more info on happenings.

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On my wagon the low beams started working intermittently until not where it doesn't work at all. High beams still work.

 

I opened up relay cleaned contacts and still low not working.

 

.

 

Perhaps the relay has an internal short I can't easily see?

 

A short is a short path to ground and excessive current would blow the fuse. Forget short unless there is unexplained fuse blowing. What people call a short is 99.99% of the time an open or broken connection.

 

 

No pakas with me, perhaps the PO., but they worked fine up until recent.

 

So tested the low lights 3 prongs and they all show 12V when I put it to regular low lights. From what you're saying one should switch to ground. Thats not the case though.

 

When i switch to high beams the top terminal of 3 prong goes mV, nearly zero V. Aat same time when I test the inner high inner lights both prongs remain at around 10V.

 

So i overlooked something. The inner(high) lights dont work at all. When I switch on highs then the outer(low) lights come on. Just little more info on happenings.

 

Are your parking/side marker/tail lights working? These have to be working to be able to have high beams. 

 

The Green/Blue stripe wire on the head light relay must have 12 volts from the parking lights.

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Yes green/blue pair at the relay plug have power when switch at parking only, low beam, and high beam setting. Anf yes all parking lights work.

 

I tried to replace the 510 relay using this put together by a John Thiessen--so its written at bottom of paper(cropped out)

 

IMAG0272_zpsiwrzskhi.jpg

 

When wired using this I had high light configuration while switch to. low beam setting--all 4 lights on. But when I switched on high beams all lights turned off. So basically had no low beam setting.

 

Most all other wiring diagrams seemed to work off of stock relay.

 

Not sure if i mentioned already but I did clean and regrease the headlight switch in-cabin when thiz first happened. No change.

 

Wonder if the switch is bad? Seems pretty basic in design and nothing looked broke so figured was good.

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They're pinned to a white plug. Don't mind the missing red/white wire I was in process of removing the wires to terminate to 5 pin relay when I realized I should probably take a pic.

 

IMAG0267_zpsai7ubrsr.jpg

 

And after some thought I think I will just go with a full set of Hella H4's and fully rewire the headlights. 

 

Are the parking lights switched on with a negative signal like headlights?

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1)So tested the low lights 3 prongs and they all show 12V when I put it to regular low lights. From what you're saying one should switch to ground

 

YES!!!!!!!!!!

 

2)When i switch to high beams the top terminal of 3 prong goes mV, nearly zero V.

Yes true the lamp should come ON the outer lamp(if your a 3 prong) Highs are 2 prong and one should go close to ground as you say and lamp should lite up

 

 

 

 

 

 

If everything was working befoere then this is a simple fix.

 

I didnt know your highs werent working. The turn signal arm will put a Ground when you pull back on the it thus putting a ground to the relay which already should have power in the otherside thus completeing the circut. Is it clicking????????

 

 

you could pull the relay make a jumper wire where the relay contacks would be.see if it passes thru when switch is pulled. is where the relay is make a wire and short it to ground then see if the light pops on.

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  • 2 weeks later...

Got them working using the above wiring for swapping in standard 5-pin relay. I had R/B wire switched with B/R wire.

 

After confirming nothing broke, and cleaning an regreasing figured the switch wasnt the problem.

 

Put in four Hella H4's with aftermarket adapter harness 2/ built in relays. Have all 4 lights on low beam as well as high. Lots better.

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Have all 4 lights on low beam ????

Only the outer lights come on on Low the 55wat element side.If inner highs are on at LOW position then the Highbeam lamps are designed to throw out the light thus going in peoples eyes.

then all 4 on high

 

 

H5 use a deflector on the LOW position to shoot th light on rear of housing. trhus getting that cut off look on the garage door when you line them up correctly

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