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Aside from the bonding straps on all the body, I did add additional braided ground strap from the (-) battery post to the frame and also to the engine block. I didn't want any body mount bushings or motor/tranny mounts to insulate. Everything metal should be well grounded. I also used a 9" radio bracket, where I cut the carpet and bolted it to the floor panel. So even the radio chassis is grounded.

Luckily the HD version 2500s come from the dealer with some factory beef ups. Aside from the suspension upgrades, bigger tranny cooler, power steering cooler, extra battery, 130A alt., etc.. The alternator charge wire looks like at least 10 gauge. It is a lot bigger than what comes on most cars and trucks I've seen. Its twice the size of the one on my F-150. I do have a 6 gauge battery cable kicking around. I could use the 6 gauge cable and cut shorter to replace the stock charging wire and see how that works. Thanks for the idea.

Replacing the auxiliary battery should help too. It shorted out and was draining the primary battery and overworking the charging circuit. I had to unhook it the other day. I was hoping to replace it today. The parts store closed early and I was at my oldest son's birthday party. So I didn't make it in time. I'm going to have to do it tomorrow.

<blockquote data-quote="roadrage" data-source="post: 443811" data-attributes="member: 21185">Aside from the bonding straps on all the body, I did add additional braided ground strap from the (-) battery post to the frame and also to the engine block.&nbsp; I didn&#039;t want any body mount bushings or motor/tranny mounts to insulate.&nbsp; Everything metal should be well grounded.&nbsp; I also used a 9&quot; radio bracket, where I cut the carpet and bolted it to the floor panel.&nbsp; So even the radio chassis is grounded.&nbsp;&nbsp; Luckily the HD version 2500s come from the dealer with some factory beef ups.&nbsp; Aside from the suspension upgrades, bigger tranny cooler, power steering cooler, extra battery, 130A alt., etc..&nbsp; The alternator charge wire looks like at least 10 gauge.&nbsp; It is a lot bigger than what comes on most cars and trucks I&#039;ve seen.&nbsp; Its twice the size of the one on my F-150.&nbsp; I do have a 6 gauge battery cable kicking around.&nbsp;&nbsp; I could use the 6 gauge cable and cut shorter to replace the stock charging wire and see how that works.&nbsp; Thanks for the idea.Replacing the auxiliary battery should help too.&nbsp; It shorted out and was draining the primary battery and overworking the charging circuit.&nbsp; I had to unhook it the other day.&nbsp; I was hoping to replace it today. The parts store closed early and I was at my oldest son&#039;s birthday party.&nbsp; So I didn&#039;t make it in time.&nbsp; I&#039;m going to have to do it tomorrow.</blockquote>

[QUOTE="roadrage, post: 443811, member: 21185"] Aside from the bonding straps on all the body, I did add additional braided ground strap from the (-) battery post to the frame and also to the engine block. I didn't want any body mount bushings or motor/tranny mounts to insulate. Everything metal should be well grounded. I also used a 9" radio bracket, where I cut the carpet and bolted it to the floor panel. So even the radio chassis is grounded. Luckily the HD version 2500s come from the dealer with some factory beef ups. Aside from the suspension upgrades, bigger tranny cooler, power steering cooler, extra battery, 130A alt., etc.. The alternator charge wire looks like at least 10 gauge. It is a lot bigger than what comes on most cars and trucks I've seen. Its twice the size of the one on my F-150. I do have a 6 gauge battery cable kicking around. I could use the 6 gauge cable and cut shorter to replace the stock charging wire and see how that works. Thanks for the idea. Replacing the auxiliary battery should help too. It shorted out and was draining the primary battery and overworking the charging circuit. I had to unhook it the other day. I was hoping to replace it today. The parts store closed early and I was at my oldest son's birthday party. So I didn't make it in time. I'm going to have to do it tomorrow. [/QUOTE]

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