What fuse for headlights?

Topic: What fuse for headlights? (Read 1411 times) previous topic - next topic

What fuse for headlights?

May 23, 2009, 11:43:17 PM

I'm looking at the evtm fuse panel diagram and I don't seem to see where the headlights show up. I see "exterior lamps" but, since the headlamps have a power feed independent of the markers I was thinking they'd have their own fuse...??

edit, more info: I have a pair of green/yellow wires at the main headlight switch which feeds power for the headlamps. This feed is dead and I'm trying to trace it and figure out why. I'm hoping it feeds from the fuse panel and it's just a fuse issue. I'd just start pulling fuses but its currently tough with the fuse panel placement in the sn dash (one thing that needs 'fine tuning').

What fuse for headlights?

Reply #1 – May 24, 2009, 12:50:32 AM

Ok, never mind, it is under "exterior lamps." For some reason it seems that the marker lights are not...

What fuse for headlights?

Reply #2 – May 24, 2009, 12:53:37 AM

Ill look it up,, your fuse actually resides inside the headlamp switch itself.

What fuse for headlights?

Reply #3 – May 24, 2009, 01:03:20 AM

Quote from: booksix;273968

I'm looking at the evtm fuse panel diagram and I don't seem to see where the headlights show up. I see "exterior lamps" but, since the headlamps have a power feed independent of the markers I was thinking they'd have their own fuse...??

No fuse. The headlight switch has a built in circuit breaker.
The curved connection between B3 and B1 is the breaker.

Quote

edit, more info: I have a pair of green/yellow wires at the main headlight switch which feeds power for the headlamps. This feed is dead and I'm trying to trace it and figure out why. I'm hoping it feeds from the fuse panel and it's just a fuse issue. I'd just start pulling fuses but its currently tough with the fuse panel placement in the sn dash (one thing that needs 'fine tuning').

The LG/Y wire on D1 is power for the dome light switch part of the headlight switch. It comes from fuse 8.
Fuse 8 also powers a bunch of other stuff but not the headlights.

What fuse for headlights?

Reply #4 – May 24, 2009, 01:03:22 AM

its a circuit breaker though,, sorry.

not sure yet why there are two wires but on page 238, there is a swich pin by pin layout if you want to tone it.

and for the record,, the fuse links up front are your "fuses" so to speak.

you will find a few post it notes good right about now. You will find yourself jumping around from pages referenced forward and back. I tend to run out of fingers after a while. the lighting circuit can be on many pages.

What fuse for headlights?

Reply #5 – May 24, 2009, 04:05:48 AM

Yeah, I put a battery in backwards once and fried a fusible link. Everything on the car worked fine, except for the headlights. After replacing them they worked fine.

What fuse for headlights?

Reply #6 – May 24, 2009, 04:29:34 AM

hmmm, well I changed the fuse directly feeding the lg/y wire (pulled the fuse panel out and traced it) and upon doing so my dome light AND headlights returned. Of course, I now have a SN switch in there and I'm wondering if I wired it wrong. I studied everything and planned it out very carefully when I put it in but who knows, I could have still messed up.

Any idea what color the wire that should feed the headlamps would be (since I no longer have a thunderbird connector to reference I need color - hopefully a match). Is it bk/or? And, if I traced this wire, where would it originate? It goes straight from a fuse link to the switch?

What fuse for headlights?

Reply #7 – May 24, 2009, 12:35:15 PM

You don't have the EVTM ?
Black/Orange wire from a fuse link to the headlight switch.
Red/Yellow wire from the headlight switch to the multifunction switch.
Maybe the SN switch doesn't have the built in breaker.

What fuse for headlights?

Reply #8 – May 24, 2009, 01:05:00 PM

87 EVTM

What fuse for headlights?

Reply #9 – May 24, 2009, 02:04:07 PM

You got the photo bucket evtm,, we talked about that the other day i think.

What fuse for headlights?

Reply #10 – May 24, 2009, 03:56:40 PM

Thanks for that page. Yeah, I do have the EVTM but, as I told Scott recently, I just moved and can't find the disc. I do have the photobucket pages but the resolution is a bit low making a lot of things unreadable. Anyway, good point about the breaker in the SN switch. Here's what I have; I don't know all the electrical symbols, is the 22A possibly describing a breaker?

What fuse for headlights?

Reply #11 – May 24, 2009, 07:35:03 PM

Quote from: booksix;274113

Thanks for that page. Yeah, I do have the EVTM but, as I told Scott recently, I just moved and can't find the disc. I do have the photobucket pages but the resolution is a bit low making a lot of things unreadable. Anyway, good point about the breaker in the SN switch. Here's what I have; I don't know all the electrical symbols, is the 22A possibly describing a breaker?

Yep that's a circuit breaker.

What fuse for headlights?

Reply #12 – May 24, 2009, 07:44:53 PM

Sweet, thanks! I think I've finally got it all straightened out!! I somehow mixed up B1 and B2 when wiring the Mustang switch so I was pulling headlight amps from the marker light fuse. This somehow lead to a series of fuses blowing which meant headlights didn't turn on from the headlight switch (only markers) and markers didn't turn on with the auto lamp system (only headlights). Now I just have to reroute the light sensor wires to the rear deck where I can discretely sense sunlight :)