Headlight question
 

Just got my 72 Jimmy about a month ago. I've had a previous 72 Jimmy and don't remember, but when I turn on the headlights, low beams are the outer two lights and the inner high beam indicator is on. And when I hit dimmer floor switch, all four lights are on and the high beam indicator goes off!

Is that correct for the outer two lights to be on for low beams, and all four to be on for high beams? Plus, when I switch to high beams, the lows seam like they have a dual filament and actually shine the beam lower on the ground! And I know the high beam indicator is incorrect, how is that fixed?

Re: Headlight question
 

Don't have an answer for ya, but hang around someone will know

BTW, welcome to the boards from Philly, Pa. Got pics?

Re: Headlight question
 

I will get some pix up by tomorrow, guaranteed!

Re: Headlight question
 

Yep, all four are on for the brights, and just the outer two are on for the dims. But your indicator seems to be a little confused.

Re: Headlight question
 

Interesting - I'd start with replacing the dimmer switch - easy to do and they often are the root of a problem, just not heard of this particular problem before.

Re: Headlight question
 

Wonder if the wires on the dimmer switch could be in the wrong location? Or backwards?

Re: Headlight question
 

Pix finally! The color is Hugger Orange. Interior is Black with orange piping on front and black seats.

http://i84.photobucket.com/albums/k2...rontwheels.jpg

http://i84.photobucket.com/albums/k2...2Jimmyrear.jpg

http://i84.photobucket.com/albums/k2...Jimmyfront.jpg

http://i84.photobucket.com/albums/k2...myinterior.jpg

http://i84.photobucket.com/albums/k2...immystereo.jpg

Re: Headlight question
 

Nice

Re: Headlight question
 

Thanks!

I'm still pondering the original topic. We established the lows stay on with the highs, but, are the lows supposed to be a dual filament type bulb and switch to a lower projected path when the high beams are on?

I have aimed these headlights at a wall, and when only the low beams are on, the lows actually are aimed higher than when I hit the foot dimmer switch to all four, and the lows switch to a lower projected beam and the high beams come on!

Re: Headlight question
 

Couple of problems here.... lemme just start from scratch.

Inner lamps are high beam only (single-filament units).

Outer lamps are both high and low beams (dual filament units), but:
(1) High beam should be higher than low beam.
(2) When highs are on, low beam filaments should go out -- unless someone has modified the lighting, probably with a simple relay. Not a bad idea, just not stock.

To further clarify (and I may have misunderstood the wording posted above) -- on high beam, all four lamps are lit... but the low-beam filament goes out and the high-beam filament comes on in the outer lamps.

Your lows are higher than your highs,and your high-beam indicator works on low beam only. Both situations are incorrect. I'd guess the two symptoms are the result of one problem.... I'm just not sure exactly what it is. Have you replaced the dimmer switch recently (or done any other wiring work)? I wonder if the high & low wires are simply reversed at the dimmer switch, or possibly somewhere else, as jaros44sr stated.

Very nice Blazer, btw...

Re: Headlight question
 

No wiring work done to the headlights by me. I just bought the truck end of November. But I've already had to rewire and fix the backup light switch. The headlights have done this since I've owned the truck!


Now that I think about it, it kinda sounds like maybe the head lamps are simply hooked up opposite each other at the front the vehicle. I'll look into this and the dimmer switch being wired wrong also.

Re: Headlight question
 

That is a sweet GMC, just about what I want mine to look like if I ever get a chance to restore it.

Re: Headlight question
 

:phat:

Re: Headlight question
 

In order for the high & low to be reversed at the lamps, the wiring would have to be cut and incorrectly re-spliced. There's no wrong way to install the plug onto the lamp...

Re: Headlight question
 

upside down lamp?

Re: Headlight question
 

Hadn't really considered that, but I guess it's possible.... if someone managed to install that, um -- whatever you call that sheet metal gizmo with the three notches in it, that the lamp rests against -- if that got installed upside down.

Geez, I sound like a idiot trying to describe that! :lol:

Re: Headlight question
 

I just looked at my GMC headlights (they're already apart.) The buckets are all the same and the dual filament lamp can only mount in them one way...but the buckets mount differently onto the gmc rad support. So, take the entire left assembly and put it on the right and vice versa.

That is if you're still thinking the bulbs may be upside down. i.e. just check to see if the writing on bulb is the right way up.

Re: Headlight question
 

I bought this 70 GMC a couple of months back All four lights burn on high and thre low beams on the wall are lower than the highs and only the two on the outside burn on low . I want to do frame off resto in a few years but for now Camo and Deer Lease wife wont let me take the 71 Hugger Orange in the Mud we leave it topless all year long. I see your cluster is Cool with the Orange Around the Guages do you know how this was done?

COOL JIMMY!!

Re: Headlight question
 

Well, I must be an ID10T, because I knew what ya meant:lol:Maybe headlite buckets?

Re: Headlight question
 

Not sure on how the orange around the gauges was done. I bought it that way. But it does stand out from the crowd!

Re: Headlight question
 

I have to correct my post....the headlight buckets are not all the same. I think the inners are different from the outers. But you should be able to flip them none the less.

Re: Headlight question
 

Yeah, headlight (or headlamp) buckets... thanks and props also to OldCreek for jogging my memory past another Senior Moment! :D

Re: Headlight question
 

as for the gauges being painted all you have to do is take your cluster out and dissassemble it. when you get to the black metal pods that your gauges are in that is what you need to paint. just remember your numbers are light green and need some contrast mine look great red

Re: Headlight question
 

Thanks i have a extra cluster i will try it out