m915a1 headlights stoppped working

[akita91]

SPamming machine is back
Headlights quit working for some reason.i wasnt aware until today when changed bulbs.what possible issues it could be?

 

[NDT]

They stopped working AFTER you changed the bulbs? Hmm.

 

[akita91]

nope.they werent working before changes.

 

[akita91]

when i drove it home,they were so faded that i barely could see anything so i was risking driving like that

 

[akita91]

all other lights are working

 

[NDT]

If it were me I would start by checking for 12 volts at the dimmer switch with a multimeter. If none, problem is upstream at the crappy light switch. If 12 volts at dimmer, problem is downstream, like disconnected wires, bad bulkhead connector, bad grounds.

 

[akita91]

another issue,with keys off but battery on,taillights on allthetime.is the black switch box on the pic could be faulty? those turn signals working as auxiliary running lights but no head
https://drive.google.com/open?id=1k1u1pq15jYD0Mik-1oVOwhJK-fyOP_m1

 

[NDT]

Taillights or stoplights? If taillights, the light switch is bad. If stoplights, check to see if you pulled the trolley brake lever a little.

 

[Ferroequinologist]

I had the exact same issue, it was the junky headlight switch. I put in a better aftermarket new one, but still ran relays to power the lights to keep the load off the switch.

 

[akita91]

do you have link or model and where do you add relays

 

[Ferroequinologist]

It was a couple of years ago, it was a universal pull switch with two positions, marker and headlight. I just got two 30amp universal relays, and wired headlights to one, and the markers/dashlights to the other. I mounted them under the dash near the switch. I am sorry that I didn't take pictures, but the parts were all available at my local auto parts store.

 

[akita91]

new switch didnt changed things.i think ill start checking grounds

 

[akita91]

anyone has diagram ?no positive voltage at bulbs.is high beam on the way or straight to switch

 

[akita91]

https://drive.google.com/open?id=1JEnwaI2IirPEgm4rLHe9Slq-RYYh8EpH
why are those yellow are up but no headlights. 2 wires show 12v switch,afterwards i dunno.

 

[NDT]

The front markers are not the same wire as the headlights, remember the main light switch feeds the high/low beam (dimmer) switch, before going to a bulkhead connector, then to the lights.

 

[akita91]

is it possible that dimmer is gone ?ill take it apart now,other than that i dont see where else it could be as i opened headlight bulbs and cleaned all wires off rust inside it.replaced main switch.Do you know that dimmer part number?
PS. i havent seen headlights circuit breaker relay inside compartment,is there any?

 

[snowtrac nome]

most likely is the crappy dimmer switch located in a crappy location, I cant tell you how many times I have seen wrres corroded right out of the end of the plug. they are not weather proof switches or connectors and mounted under your feet where dirt and water always reside.

 

[akita91]

Do you know part number of autoparts stores?

 

[akita91]

https://shop.advanceautoparts.com/p/bwd-headlight-dimmer-switch-ds109p/5970334-P Found it ,thank you guys,ill try.

 

[akita91]

as you said connector was corroded badly,replaced now all lights work as they should ,thank you guys,i doubt i would resolve without this forum.i owe 24 pack