Hi/Low Beam replacment switch? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 02-16-2002, 03:58 AM Thread Starter
 
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Hi/Low Beam replacment switch?

I want to replace the high low beam foot switch in my cj, the switch is not easily gotten to with the roll rage, and the switch went out the other day, so I thought it is a good time to replace it.

I would like to put a switch on the dash but cant find a switch of the same kind, I checked radio shack and couldn't find anyhting, maybe I missed it? It is the type that switches between the two seperate curcuits, one for high beams and one for low. It isn't two hot wires and a single ground, like I thought it would be, but two seperate complete circuits. The switch is for copper studs, and the hot and ground of the highs hook two one side, the hold and ground of the lows hook to the two on the other side. the copper piece goes between connecting one circuit at a time.

I need something that does the same thing. Where do I get it? how much? do you have a pic or part number?

thanks
tony

79 CJ 5, 258, dana 30, model 20, T18, dana 20, 2.5" rancho lift, 1" shackles
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post #2 of (permalink) Old 02-16-2002, 05:12 AM
 
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Re: Hi/Low Beam replacment switch?

The part you want is a double-pole double-throw (DPDT) switch. Unless you've added a headlight relay the switch will have to handle the full load of the headlamp circuit, so look for a rating of ~30 amps at 12VDC. You might be able to pick one up at a good auto parts place. Electronics places like Radio Shack probably won't have anything that heavy duty.

If you want to add a relay, now would be the time. It will make your lights stronger and let you use a lighter duty (in this application you'd use SPDT) switch. JCWhitney has this one but you should be able to find a similar one (or use 2 separate relays) at your local parts place. If money is no object, Painless has a kit with waterproof relays and everything.

Rick -- 80s CJ7, under construction since June
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post #3 of (permalink) Old 02-16-2002, 05:33 AM
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Re: Hi/Low Beam replacment switch?

Make that double pole SINGLE throw.


I've replaced so many parts that my old Jeep has become my new Jeep.
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post #4 of (permalink) Old 02-16-2002, 05:40 AM
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Re: Hi/Low Beam replacment switch?

[img]/wwwthreads_images/icons/crazy.gif[/img] Er.......not too put TOO fine a point on it, but there IS no ground in that switch wiring harness.[img]/wwwthreads_images/icons/blush.gif[/img] There is a hot feeder from the headlamp switch......a lead that goes to the Low Beam.....a lead that goes to the High Beam.....and a lead from that SAME high beam terminal that goes to the high beam indicator bulb........Bub.[img]/wwwthreads_images/icons/tongue.gif[/img] So, any SINGLE POLE DOUBLE THROW switch will work. Center is the feed.....one pole goes to High beam and dash lamp.....one pole goes to Low beam.[img]/wwwthreads_images/icons/crazy.gif[/img] The relay thing is a good plan......it would enable you to use a tiny SPDT switch on the turn signal lever.[img]/wwwthreads_images/icons/cool.gif[/img]

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post #5 of (permalink) Old 02-16-2002, 05:45 AM
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Re: Hi/Low Beam replacment switch?

[img]/wwwthreads_images/icons/laugh.gif[/img] Don't believe those guys.......![img]/wwwthreads_images/icons/smile.gif[/img] I'm right and everybody else is wrong![img]/wwwthreads_images/icons/laugh.gif[/img][img]/wwwthreads_images/icons/cool.gif[/img] Er........ah......yeah,[img]/wwwthreads_images/icons/blush.gif[/img] OK, Double Pole Single Throw. Tie the two outside poles together. That way there is no "Headlights Off" position.[img]/wwwthreads_images/icons/crazy.gif[/img]

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post #6 of (permalink) Old 02-16-2002, 06:03 AM
 
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Re: Hi/Low Beam replacment switch?

OK. If it were two separate circuits as tonyscj5 thought, then you'd want a DPDT. If it is one switched circuit with hi-indicator light as CJDave says (sounds right to me [img]/wwwthreads_images/icons/smile.gif[/img]) then it'd be SPDT.

In any case, a DPDT switch will work as an SPDT by just ignoring the second second set of contacts. So I might not have been right, but at least I wasn't wrong [img]/wwwthreads_images/icons/tongue.gif[/img]


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post #7 of (permalink) Old 02-16-2002, 06:24 AM
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Re: Hi/Low Beam replacment switch?

Yep, Dave's right. Give me a break, I just woke up.


I've replaced so many parts that my old Jeep has become my new Jeep.
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post #8 of (permalink) Old 02-16-2002, 06:32 AM
 
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Re: Hi/Low Beam replacment switch?

Having cracked open the service manual (just a crazy idea I had!) it is indeed as CJDave described. Not that anyone would have doubted that [img]/wwwthreads_images/icons/wink.gif[/img]. So a SPDT switch will work.

The switch will have one contact on the input side and two on the output. The input contact gets the RED (14ga.) wire that comes from the light switch. Of the remaining 3 wires, the thickest (14ga.) ties together with the thinnest (18ga.) on one output and the remaining wire (16ga.) goes on the other (high and low, respectively)

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post #9 of (permalink) Old 02-16-2002, 10:31 AM
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Re: Hi/Low Beam replacment switch?

Why not just get a direct replacement and move it to a better location?[img]/wwwthreads_images/icons/shocked.gif[/img] I agree that it's a PITA to get to now (mine's the same and I don't have front hoop in the way), but completely "re-engineering" is an equal or greater PITA. This way you retain "stock" parts and only redrill a couple of holes.

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post #10 of (permalink) Old 02-16-2002, 10:51 AM
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Re: Hi/Low Beam replacment switch?

..old saying...When you try to get trick you'll step on your d**k....keep it simple

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