Power source from fuse box?

-
1MeanA

1MeanA

Well-Known Member
Joined
Jul 22, 2009
Messages
2,151
Reaction score
2,211
Location
Edmonton
I have a silly electrical question....I was looking for a few power sources potentially from the fuse box. I need power for the washer pump (will operate off a momentary switch mounted in the manual pump foot bracket) and for the carb choke (switched). I see 2 open connectors in the fuse box. I assume if I use these the circuits would be unfused?

stole this pic

fusebox.png
 
Depends on what side of the fuse they’re on. Check for power, then pull the fuse and check again. Easy peasy. I just added a circuit on my D100 and I pulled keyed hot off of a spade on the back of the fuse panel very similar to that pic and it was fused.
 
TT5.9mag said:
Depends on what side of the fuse they’re on. Check for power, then pull the fuse and check again. Easy peasy. I just added a circuit on my D100 and I pulled keyed hot off of a spade on the back of the fuse panel very similar to that pic and it was fused.
Click to expand...
The whole dash is on the bench right now. I assumed that this was the feed side but am not sure.
 
Looking closer at your pic I would agree. That is the feed side. The jumpers make me think that.
 
Depends on how much power you want. If you are running a stock harness, the usual warnings about the ammeter circuit apply. There are THREE busses in the fuse panel. One is hot at all times, on is the feed from the key "ACC" position, and the little one is ONLY for the instrument lamps circuit.

ALL of the fuse buss's is supplied from the BLACK ammeter wire so that point suffers from any problems upstream.

Meaning, damaged fuse link, problems with the big red and big black wires through the bulkhead connector, problems in/ with the ammeter and connections, and the rare possibility of the welded splice in the black wire being damaged or broken. AND in the case of ACC, you have the added bonus of problems with the ignition switch connector and inside the switch (contacts) themselves.
 
Your harness may already have the pigtail for the washer pump. I want to say brown? With a single connector
 
67Dart273 said:
Your harness may already have the pigtail for the washer pump. I want to say brown? With a single connector
Click to expand...
I'll have to look over the wiring diagram. I have no switch as far as I know (2 speed wipers). The factory switch is just grounding?
 
You May have the wiring for it regardless. What Year Make and Model?
 
1MeanA said:
I'll have to look over the wiring diagram. I have no switch as far as I know (2 speed wipers). The factory switch is just grounding?
Click to expand...
This is what, the 70 in your signature?

No the switch supplies power via a single brown to the washer unit.
 
Sorry Guys, I over looked that!

And Dell, have not been actively posting in a long time, But very glad to see you and all your knowledge still on the site!:thumbsup:
 
I'm looking at post #13 that says the power went through the dark brown wire in the switch. I have a brown wire with white stripe that does connect to a terminal on the switch so I doubt its for the pump since its a 2 speed switch. I can't find any reference to a washer pump on the wiring diagrams.

looking for wiper switch info

So I am working on a 1970 Dart GT that came with 2 speed wipers and a manual foot pump for the washer. After thinking about it I decided to get rid of the manual washer system and go to electric (fear of a malfunction dumping a quart of washer fluid in my nice freshly painted floorpan and new...
www.forabodiesonly.com
 
I was fortunate enough to have a couple extra wire harnesses on hand when I reconditioned my dash harness. I pulled a couple of the ends out of one of the extra fuse boxes that clip into the box and holds the fuse and snapped them into the open spaces. That's where I ran my power feed to my stereo amps, from the starter relay on the inner fender, through the firewall junction block (again, using extra wire ends from the extra harnesses) and to the fusebox. From there it runs through a 20 amp fuse and the wire on the other end goes to the amps in the trunk. And since it's hot all the time I also ran my extra interior lighting and the trunk light from it as well.

If you can get your hands on a couple of those fusebox wire ends you can jump one off one of the power-in sources (preferably the keyed one) and run that power to your pump and/or choke.

And I can't recommend highly enough to everyone-get a fire extinguisher! Keep it in the car. Once it goes up in smoke it's potentially a goner without one. $25 for a little multi purpose extinguisher is cheap insurance.
 
Just spit balling here. IF you have the wire existing in your harness for the pump you may be able to buy the wiper switch that's for an electric pump?
 
IIRC......Your plug for the wiper switch is 2 pieces. The footprint for a 2 speed switch(manual pump) and a variable speed switch(electric pump) are different. However, those 2 pieces of your plug just get oriented a different way in order to fit either switch, so there is a provision in that harness for the electric pump.

Probe the switch plug with an ohm meter to the dash bulkhead connector. The feed to the washer motor is in one of the corners of the bulkhead plug. The main 4 wires for the wiper motor run down one side. The washer feed is in the top or bottom corner of the opposite row. Find that continuity and you have your circuit.

If this makes no sense, let me know and I'll dig out and old harness and take a pic.

This is what I discovered on my '71 when I converted to the variable/electric combo from a 2 speed set up. Eezy peezy.
 
Kendog 170 said:
Just spit balling here. IF you have the wire existing in your harness for the pump you may be able to buy the wiper switch that's for an electric pump?
Click to expand...
There isn't an extra wire that I can see or even shown in the electrical diagrams.

CFD244 said:
IIRC......Your plug for the wiper switch is 2 pieces. The footprint for a 2 speed switch(manual pump) and a variable speed switch(electric pump) are different. However, those 2 pieces of your plug just get oriented a different way in order to fit either switch, so there is a provision in that harness for the electric pump.

Probe the switch plug with an ohm meter to the dash bulkhead connector. The feed to the washer motor is in one of the corners of the bulkhead plug. The main 4 wires for the wiper motor run down one side. The washer feed is in the top or bottom corner of the opposite row. Find that continuity and you have your circuit.

If this makes no sense, let me know and I'll dig out and old harness and take a pic.

This is what I discovered on my '71 when I converted to the variable/electric combo from a 2 speed set up. Eezy peezy.
Click to expand...
My understanding is that the 2 speed switch has no washer pump button so even if I found a hot wire I still need a switch. I don't believe a 3 speed switch will work but and I would need the corresponding wires but who knows. I'm going to mount a momentary switch in the foot pedal which is where I will run the power to. I haven't figured out how I will route it to the pump yet but that should be straight forward. The diagram doesn't illustrate which wire is for the pump. It might be one of the two brown wires shown but I only have one brown wire for my 2 speed set-up.
 
1MeanA said:
I'm looking at post #13 that says the power went through the dark brown wire in the switch. I have a brown wire with white stripe that does connect to a terminal on the switch so I doubt its for the pump since its a 2 speed switch. I can't find any reference to a washer pump on the wiring diagrams.

looking for wiper switch info

So I am working on a 1970 Dart GT that came with 2 speed wipers and a manual foot pump for the washer. After thinking about it I decided to get rid of the manual washer system and go to electric (fear of a malfunction dumping a quart of washer fluid in my nice freshly painted floorpan and new...
www.forabodiesonly.com
Click to expand...
What diagram are you looking at? I looked up the OEM factory manual, not the aftermarket one. The engine bay diagram shows the pump and connection (the one wire) to the bulkhead connector, and the instrument panel wiring shows the brown coming from the wiper switch to the bulkhead.

I don't remember. I think on some switches, you push in the whole knob, and on some there's a center button.
 
You must log in or register to reply here.
-

Back
Top