Need electrical help
Thread Starter
|
Mountain Pass
Joined: Sep 2005
Posts: 130
Likes: 1
From: Plainville, MA
Need electrical help
Hooking up a relay in my 2006 SD diesel to power a DC-AC inverter. I have used a heavy duty plow control relay to supply the DC and now need to find a circuit that I can tap into that will ground or supply 12VDC to the relay control when the motor is on. I will hardwire a ground or 12VDC to the other pole. Either way, I don't want to add a manual switch, as I will forget to turn it off. Please don't tell me the ingition run circuit or similar - I am looking for specific wire color and where to find it under the hood.
Thanks, Rich
Thanks, Rich
Postmaster
Joined: Jun 2004
Posts: 2,646
Likes: 1
From: Milky Way Galaxy
Just a thought, but you could probably use the tach signal wire that sits unused in the same bundle of wires by the parking brake release where the 4 pass-through wires are. The tach wire should have enough juice to power a Bosch style relay and would have juice when the truck's running. With the relay, it would be you're choice whether to make the outputs of the relay + or -. I believe the tach wire is Lt. Green/White. But as always, test the wire.
Senior User
Joined: Jun 2004
Posts: 236
Likes: 0
From: Terrace B.C. Canada
Originally Posted by EnviroCon
Just a thought, but you could probably use the tach signal wire that sits unused in the same bundle of wires by the parking brake release where the 4 pass-through wires are. The tach wire should have enough juice to power a Bosch style relay and would have juice when the truck's running. With the relay, it would be you're choice whether to make the outputs of the relay + or -. I believe the tach wire is Lt. Green/White. But as always, test the wire.
Elder User
Joined: Jul 2004
Posts: 811
Likes: 0
your right jello. The tach wire isn't suitable for that purpose. There is a white wire with blue stripe. It sit on top of the diagnostic connector under the dash, roughly over the gas pedel. It comes with nothing connected to it. It's for customer use as accessory power.
Last edited by Netfly; Nov 25, 2006 at 08:23 PM.
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Radio 12v
lt. green/purple
+
radio harness
Radio Ground black and black/lt. green - radio harness
Radio Ignition pink + radio harness
Radio Illumination lt. blue/red (dimmer) + radio harness
The only thing I can think of will be the fuel pump wiring. It will turn on for a few seconds when the key is on, but if the motor is not running will shut back off.
lt. green/purple
+
radio harness
Radio Ground black and black/lt. green - radio harness
Radio Ignition pink + radio harness
Radio Illumination lt. blue/red (dimmer) + radio harness
The only thing I can think of will be the fuel pump wiring. It will turn on for a few seconds when the key is on, but if the motor is not running will shut back off.
Thread Starter
|
Mountain Pass
Joined: Sep 2005
Posts: 130
Likes: 1
From: Plainville, MA
Thanks for the ideas. I will check for those wires in the AM to see what I can find. I do have the upfitter switches, but I use those for other things, and don't think that I need a manual override, although I will have to ponder that a bit more.
Trending Topics
Senior User
Joined: Sep 2006
Posts: 392
Likes: 2
I looked a little further and your truck should have a 10 amp (location 29)fused wire in the customer access wiring. White with a light blue stripe. They put tags on them with what they are.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Postmaster
Joined: Jun 2004
Posts: 2,646
Likes: 1
From: Milky Way Galaxy
Originally Posted by gagnonconsulting
when the motor is on.
Thread Starter
|
Mountain Pass
Joined: Sep 2005
Posts: 130
Likes: 1
From: Plainville, MA
Admittedly, when I first posted, it didn't matter. In retrospect, however, since the inverter will potentially draw a fairly large load, I believe that it should be on only when the motor is running.
Posting Guru
Joined: Jul 2006
Posts: 1,191
Likes: 0
From: New York
Thanks for the wiring tips. I just finished installing my airhorn and wanted an ignition accessory wire, in case there is some leak or something, the compressor won't run all night. Now it can only go on with the engine running.
Postmaster
Joined: Jun 2004
Posts: 2,646
Likes: 1
From: Milky Way Galaxy
Originally Posted by gagnonconsulting
. . .I believe that it should be on only when the motor is running.
Originally Posted by jello
I thought tach signal pulses, not constant voltage
Thread Starter
|
Mountain Pass
Joined: Sep 2005
Posts: 130
Likes: 1
From: Plainville, MA
Ended up using the white/blue wire under the dash so unit only runs when ignition is on. Decided that that is close enough verses running when the motor is running, since I don't generally leave the ignition on without truck running anyway.
Thanks again for all the advise.
Thanks again for all the advise.
Thread
Thread Starter
Forum
Replies
Last Post
TRENT310
1999 - 2016 Super Duty
13
Oct 26, 2014 02:46 AM
et_miller_87
1987 - 1996 F150 & Larger F-Series Trucks
3
Jul 26, 2013 11:35 PM
theologian
General NON-Automotive Conversation
29
Sep 13, 2003 09:44 AM