Tid Bit. Getting a wire fed in tight small places.

Bob Dunahugh

New member
Sep 17, 2012
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Ever tried to get a wire a short distance under carpet. Or thru a double panel of the floor, or bulk head. Drill the hole large enough to stick a long straw thru your hole. ( Gas stations have the longest straws for their soft drinks. ) Feed the wire into the straw. Pull the straw out the other end after feeding the wire to the other end of the straw.. Or leave the straw to protect the wire from vibration. I needed to feed a wire under our rubber backed carpet. ( Was putting the EFI engine control module under the seat. ) Slid the straw under the carpet. Then just slid the wire thru the straw. Again. Left the straw under the carpet. Used that straw 7 months later to add another wire. Bob Dunahugh
 
For longer push/pulls or chases, you can buy small OD pex tubing by the roll. I use 1/4" or 3/8" (x 50 ft) about as much for fishing as I do plumbing.
In situ, it makes a very strong -but still flexible- conduit.
 
For years at work we used the plastic rod which opens thin blinds. Up to 6 feet long, flexible, and there's a hook on the end for the wire.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
 
RC. Using PEX as a conduit is a choice that I hadn't thought of. Nice idea. I had a warehouse tenant that installed fiber optic underground plastic conduits. He gave me some long ends of his 1/2 inch diameter rolls. That were different colors. All the 12 volt wire under our GMC is now in that FO tubing. When I built this GMC. I used that tubing inside, and out. Then put extra runs of that FO tubing in the walls. This way I can run future wires later, and simply from front to back. It seems that a lot of electrical issues arise due to the problem of 40 plus years of road hazards, and vibration. So it comes down too. How much would you like to avoid future problems that you can prevent now. It's simpler then you think to put that undercarriage wire in tubing. And don't forget to use the heat shrink wire butt connectors. Electrical black tap MUST NOT be used. Bob Dunahugh.

________________________________
From: Bob Dunahugh
Sent: Saturday, April 28, 2018 11:02 PM
To: gmclist
Subject: Tid Bit. Getting a wire fed in tight small places.

Ever tried to get a wire a short distance under carpet. Or thru a double panel of the floor, or bulk head. Drill the hole large enough to stick a long straw thru your hole. ( Gas stations have the longest straws for their soft drinks. ) Feed the wire into the straw. Pull the straw out the other end after feeding the wire to the other end of the straw.. Or leave the straw to protect the wire from vibration. I needed to feed a wire under our rubber backed carpet. ( Was putting the EFI engine control module under the seat. ) Slid the straw under the carpet. Then just slid the wire thru the straw. Again. Left the straw under the carpet. Used that straw 7 months later to add another wire. Bob Dunahugh
 
I use 1/4" air ride air hose. It is tough stuff. Rigid at room temp. When
heated with near boiling water, it will freely bend 90°, when it cools,
goes back to tough stuff. It will handle 12 gauge automotive wire inside
easily.
Jim Hupy
Salem, Or

>
> RC. Using PEX as a conduit is a choice that I hadn't thought of. Nice
> idea. I had a warehouse tenant that installed fiber optic underground
> plastic conduits. He gave me some long ends of his 1/2 inch diameter
> rolls. That were different colors. All the 12 volt wire under our GMC is
> now in that FO tubing. When I built this GMC. I used that tubing inside,
> and out. Then put extra runs of that FO tubing in the walls. This way I can
> run future wires later, and simply from front to back. It seems that a lot
> of electrical issues arise due to the problem of 40 plus years of road
> hazards, and vibration. So it comes down too. How much would you like to
> avoid future problems that you can prevent now. It's simpler then you think
> to put that undercarriage wire in tubing. And don't forget to use the heat
> shrink wire butt connectors. Electrical black tap MUST NOT be used. Bob
> Dunahugh.
>
> ________________________________
> From: Bob Dunahugh
> Sent: Saturday, April 28, 2018 11:02 PM
> To: gmclist
> Subject: Tid Bit. Getting a wire fed in tight small places.
>
>
> Ever tried to get a wire a short distance under carpet. Or thru a double
> panel of the floor, or bulk head. Drill the hole large enough to stick a
> long straw thru your hole. ( Gas stations have the longest straws for
> their soft drinks. ) Feed the wire into the straw. Pull the straw out the
> other end after feeding the wire to the other end of the straw.. Or leave
> the straw to protect the wire from vibration. I needed to feed a wire
> under our rubber backed carpet. ( Was putting the EFI engine control
> module under the seat. ) Slid the straw under the carpet. Then just slid
> the wire thru the straw. Again. Left the straw under the carpet. Used that
> straw 7 months later to add another wire. Bob Dunahugh
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
Bob, black tape and ScotchKote is the normal seal for splices in coax, and I've taken down ones older than our coaches out in the weather - still
sealed. Not for use on crimp - ons, but I solder splices in lieu of crimp - on butt splicers. Layer of tape, layer of ScotchKote layer of tape etc.
3 layers plus a top of black tape Put on such that it won't unwind itself.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased