Help!

[kollak01]

so last night i went to leave a buddies house and my low beams did not turn on with the headlight switch. i have the fuse removed for the drl's but that should not effect them like this. i put the drl fuse back in and same thing. also checked all fuses, swapped a different bulb and still didnt work. checked the parking brake switch. there is a relay board by you left foot when sitting in the truck where the chime relay is located i was wondering how many relays are supposed to be down there and what does each one do. maybe point me to a wiring diagram.

 

 

any help would be great.

 

thank

 

 

kent

[kollak01]

so i think it may be the multifunction switch. dimmer switch.

is there a way to stop the mfs from telling the low beams to turn off when turning on the high beams?

[ChRoNo16]

There is a kit sold for this from LMC truck that will allow you to keep lows and highs on together, but you need the whole kit, I believe it has you replace the whole switch for the headlights because the old ones had too much power run to them or something, anyways yeah there is a kit for what you wanna do, sorry I cant tell you more except thats the way you want to do it, trying to modify the system as it sits could do real damage or start a fire,

[kollak01]

so since i did not get much input on here i tore into the truck last friday night. took the lower dash, dash and steering column cover off. found the where the wires enter the rear of the MFS the wires were stripped slightly too long, corrosion had eaten away at on of the wires completely loosing its connection, and one was about to go. i trimmed back the plastic of the connector to expose the pin. after this i soldered a lead wire directly to the side of the pin of the connector i did this to two of the pins. the most damadged wires. i am sure these a just wires to the headlight relay. as they were not very big. the wires that broke were very hard and the insulation of the wire was hard to get off. three of the wires on the connector were hard like this i assume these were for the headlights as they are used the most and there would be current going through them a lot more than say the cruise or a signal.

 

 

here is a pic of my repair saved my ass 440 dollars at the stealership.

 

 

 

 

 

i got some good input on mods for my truck but barely any help on a real issue!.

 

here is the solution and probably the cause of 75% of MFS failures and replacements.

[kollak01]

to the top cause i am proud of my fix!

[[email protected]]

When mine did the same thing I just grounded the grounds on the back of the low beams, not only did that fix the problem, but it also gave me the 4hi mod.

[ChevyTech77]

Maybe put the thread in the "Ask a Technician" sub forum for help?

[kollak01]

as you can see i only have so many posts. i neded help so i put it here. i did not know there was sa section like that and plus if i put it there they are just going to tell me to buy the mfs.