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bill257's avatar
bill257
Explorer
Aug 26, 2018

Amp L Start

I have a question about Amp L Start wiring connection.Two positive wires will connected one each to positive side of chassis and House battery.While ground wire will be grounded.Now I want to install Amp L Start under the hood near chassis battery and will use the installed relay to attach the two positive wires from Amp L Start.I did not see any ground terminal under the hood so where should I attach the ground wire.Can I attach it to the negative terminal of the chassis battery.
  • Just a clarifcation.Initiially I thought i will be connecting house and chassis battery connections from ALS to a relay but than realize it is a BUS under the hood.One wire from BUS is going to the positive terminal of chassis battery and other wire is going under the Rig to the house battery box and connecting to another split terminal and from there going to the positive terminal of the house battery.My question is that can I connect ALS house and chassis battery connections to this BUS.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Ground points exist all over creation under the hood. Most any metal bracket, brace or bar is a ground.

    TO FIND ONE you need a 12 volt test light.. You find this in the ELECTRICAL wall at most any automotive department or parts store. Looks a bit like an old fashion ICE pick save it has a clear or colored handle with a light in it and a lead with a clip.

    FIrst make sure the light works (I often have to reseat the lamp) by testing across the battery terminals.

    Then find a known 12 volt point (LIke one side of the isolator relay) and hook the clip

    Touch the tip to most anything. Good light = good ground.

    Drill a hole and insert a self tapping screw.

    One example of a good ground on a Workhorse is the brake bell crank bracket..

    Just make sure you do NOT hook to or obstruct any moving parts.
  • When I installed a Trik-L-Start on my previous RV, I used sheet metal screws to screw it to the sheet metal of the storage compartment. I just put the ground wire around one of the sheet metal screws and let the sheet metal ground it to the frame. That ground wire isn't carrying significant current, it is just there so the electronics in the device will work.
  • bill257 wrote:
    I have a question about Amp L Start wiring connection.Two positive wires will connected one each to positive side of chassis and House battery.While ground wire will be grounded.Now I want to install Amp L Start under the hood near chassis battery and will use the installed relay to attach the two positive wires from Amp L Start.I did not see any ground terminal under the hood so where should I attach the ground wire.Can I attach it to the negative terminal of the chassis battery.


    Yes

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