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Wiring diagram/example
#1314684 Tue Jun 18 2019 12:11 AM
Joined: Apr 2019
Posts: 140
J
JD1 Offline OP
Shop Shark
Hi. I am going through the wiring on my 3100. It looks like the previous owner installed a new wiring harness when he switched to 12V. The harness is setup for the headlights, tailights, dash gauges, and ignition switch.

The heater is wired to the ignition switch. It doesn't look like there is a fuse block in the harness for any accessories.

Can anyone recommend a fuse block that I can add off the ignition switch to power accessories I want to work with the ignition on?
For example:
heater, electric wipers, dome light, maybe radio, turnsignals

Thanks,
JD



1951 Chevy 3100 1/2 ton (1957 235, 4 speed, 411 rear)
Re: Wiring diagram/example
JD1 #1315470 Mon Jun 24 2019 01:46 AM
Joined: Apr 2019
Posts: 140
J
JD1 Offline OP
Shop Shark


1951 Chevy 3100 1/2 ton (1957 235, 4 speed, 411 rear)
Re: Wiring diagram/example
JD1 #1315485 Mon Jun 24 2019 02:30 AM
Joined: Mar 2019
Posts: 177
S
Shop Shark
More expensive, but there's this too:

Painless 14 Circuit Universal ATO Fuse Block Assembly



This page at Summit Racing has several options:

Summit Racing fuse blocks

Last edited by Shakey61; Mon Jun 24 2019 02:39 AM.

This is what happens when you live with a house-full of women, the wife and daughters name all the cars:
1960 Impala - "Frankie" (Frank Sinatra)
1961 Apache - " 'Mater Jr." (wrecker)
1972 SuperBeetle Convertible - "Juliet"
1976 SuperBeetle Convertible - "Olaf"
1988 Alfa Romeo Spider Veloce - "Romeo"
Re: Wiring diagram/example
JD1 #1315495 Mon Jun 24 2019 03:21 AM
Joined: Jul 2000
Posts: 1,132
G
Shop Clutterist
I mounted a small fuse box on the cabin side of the firewall for the accessories. Fuse box like this:

https://www.amazon.com/HELLA-H84960111-8-Way-Lateral-Single/dp/B000VU9D20


Gord
----
1954 1/2 ton 235 4 speed
Re: Wiring diagram/example
Shakey61 #1315617 Tue Jun 25 2019 02:36 AM
Joined: May 2005
Posts: 143
5
Shop Shark
Originally Posted by Shakey61
More expensive, but there's this too:

Painless 14 Circuit Universal ATO Fuse Block Assembly


I used this 14 circuit panel from Painless. It is a good basic fuse panel. Unfortunately the screw connections are on the side and that makes it real difficult to access after the panel is installed. I would probably pick a different one when I build another vehicle.

Mark

Re: Wiring diagram/example
Gord&Fran #1315716 Wed Jun 26 2019 02:13 AM
Joined: Apr 2019
Posts: 140
J
JD1 Offline OP
Shop Shark
Originally Posted by Gord&Fran
I mounted a small fuse box on the cabin side of the firewall for the accessories. Fuse box like this:

https://www.amazon.com/HELLA-H84960111-8-Way-Lateral-Single/dp/B000VU9D20



I like the look of that one. Does it have one hot feed or does it use 8 separate ones?
Where did you get the hot feed when you wired it?


1951 Chevy 3100 1/2 ton (1957 235, 4 speed, 411 rear)
Re: Wiring diagram/example
JD1 #1315722 Wed Jun 26 2019 03:05 AM
Joined: May 2015
Posts: 3,416
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
The Painless 3001 has a single hot feed. It also has a standoff bracket, so wires can be run underneath it. The side screw connections aren't ideal though.
Here's a link to the manufacturer's info on it. link There's a link on the page to an instruction manual and wiring diagram.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Wiring diagram/example
JD1 #1315756 Wed Jun 26 2019 04:34 PM
Joined: Jul 2000
Posts: 1,132
G
Shop Clutterist
Originally Posted by JD1



I like the look of that one. Does it have one hot feed or does it use 8 separate ones?
Where did you get the hot feed when you wired it?


No single hot feed. I didn't want a single hot feed. Instruments, back up lights and wipers are wired to ignition. Heater fan and cigar lighter are wired to acc. Dome light and signals wired to bat.

The painless fuse block that Kevin referred to is similar to one I used on another project. The one I got was from a wrecked Chevette. Usually only need one flasher in an old truck as you are probably using a signal stat switch.


Gord
----
1954 1/2 ton 235 4 speed
Re: Wiring diagram/example
JD1 #1315758 Wed Jun 26 2019 04:52 PM
Joined: Nov 2018
Posts: 85
D
Awesome Grandpa
This is what I used ....

Attached Files
Capture.jpg (14.91 KB, 183 downloads)
fuse panel
20190607_212500.jpg (252.15 KB, 184 downloads)
fuse
Re: Wiring diagram/example
JD1 #1316387 Wed Jul 03 2019 05:20 PM
Joined: Apr 2019
Posts: 140
J
JD1 Offline OP
Shop Shark
I have the heater and wipers hooked up to the ignition switch for now. I wouldn't think the ignition switch is rated for both of them so I would like to create an accessory fuse block for both of them (and maybe a radio if I ever hook it up).
I wired up my dome light last night. I found that the headlight switch has a connector for the dome light. I'll probably put an inline fuse in that line or move it to an accessory fuse block when I set it up.

For you guys that installed a accessory fuse block, did you run a new hot feed off the battery, or after ignition switch, or off headlight switch?


1951 Chevy 3100 1/2 ton (1957 235, 4 speed, 411 rear)
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