How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask sprinkles08 Your Own Question

sprinkles08
sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 17073
Experience:  ASE Master and Advanced level certified. Factory trained with 14 years dealership experience
9825021
Type Your Car Question Here...
sprinkles08 is online now
A new question is answered every 9 seconds

WK2 limited: looking for an iginition source

Resolved Question:

looking for an ignition source for a redarc1220bc-dc ign battery charger for the 2012 jeep grand cherokee diesel to run an auxillary battery. My electrician is having problems locating a power source that does not run off the auxillary switch/system. Redarc could not help and Jeep are also struggling.

Submitted: 1 year ago.
Category: Car
Expert:  sprinkles08 replied 1 year ago.
Hello and welcome to JustAnswer!

I see your question has been up for an extended time without a response. Do you still need help?


Customer: replied 1 year ago.

Yes, as I have not advanced any further

Expert:  sprinkles08 replied 1 year ago.
You need the power source to be live only when the ignition is on, correct?

Does it need to be under the hood or in the interior?

How many amps does the device need?


Customer: replied 1 year ago.

Yes I need the power source to live when the ignition is on. The supply needs to be 12 volt but the current would only be 100 milli-amps as it is only a signal for the charger to start charging. The supply can come from under the hood or the interior. The second battery will be located in the rear of the vehicle directly behind the rear seats

Expert:  sprinkles08 replied 1 year ago.
The easiest place for you to go would be the cigarette lighter then. The dark blue/pink wire at the cigarette lighter connector is powered only when the ignition is on and would be a perfect circuit to connect to the signal wire for your charger.
Customer: replied 1 year ago.

This supply also comes on when the accessories are on. My electrician says that I need to connect to a supply that only comes on when the engine is running otherwise the battery will charge while accessories are on. The charger is a 20amp/hr battery charger. I also have my uhf radio connected to this point.

Expert:  sprinkles08 replied 1 year ago.
Since you have a diesel engine there really aren't any circuits that are powered only when the engine is running rather than when the key is on. If you had a gas engine there would be the ASD circuit that powers the injectors and coils, but the diesel engine doesn't have anything that's powered only when the engine is turning. The only circuits that are switched power are going to be of the ignition accessory circuits.
Expert:  sprinkles08 replied 1 year ago.
If you have a need to have the ignition on but not run the engine you could just install an inline switch in the charger signal wire. If you needed to have the ignition on without the engine running you could just turn the switch off to break the signal circuit, when the engine is running again then you could flip the switch back to on, complete the signal circuit and have the charger running again.
Customer: replied 1 year ago.

As the engine has injectors etc I would have thought that it would have a similar set up the gas injection system. Is this not the case.

Expert:  sprinkles08 replied 1 year ago.
No, that's not the case. Gas engine injectors get a constant battery voltage on one wire any time the engine is running, supplied by a high side driver from the TIPM. The piezoelectric injectors on a diesel aren't controlled nearly the same as on a gas engine and they don't get any sort of constant voltage source like a gas engine.
sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 17073
Experience: ASE Master and Advanced level certified. Factory trained with 14 years dealership experience
sprinkles08 and 14 other Car Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV. Dutch USA
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
  • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

    Ted G.

    ASE Certified Technician

    Satisfied Customers:

    1596
    20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    1311
    ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    ASE Master Tech

    Satisfied Customers:

    2367
    ASE Master Tech advanced level specialist
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1906
    ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    942
    12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
  • http://ww2.justanswer.com/uploads/ST/Steve7654/2012-6-5_215929_japic800x660.64x64.jpg Steve's Avatar

    Steve

    Auto Service Technician

    Satisfied Customers:

    1980
    25+ yrs experience as a professional working technician; ASE L1 master technician