2008 K2 - Ground Lugs

[BrokeDown]

I am having some strange electrical problems. I have been thinking that it might be a ground problem. The most recient problem is that my SeeLevel II system is getting false reading. According to SeeLevel Tech Support, it is a ground problem.

I cleaned up the connections that I could find in the front of the coach/frame but that did not help. I check the battery connections and they are all good.

There looks to be 3 heavy cables that run from the house batteries towards the center of the frame and another heavy cable running from the engine batteries. I would like to check these connections but I am not sure where the connections to the frame and engine are. I am a fat guy so crawling around under the coach which is parked on crushed sea shells is not my idea of fun.

Does anyone know for sure where the frame and engine ground connections are?

Thanks
-B

[mackwrench]

It seems that the ground cable attachment varies from Coach mfg.
You should have one from chassis batteries to chassis frame, from engine to chassis frame.
Take a pair of jumper cables hook up ground only at batteries, and the other to the engine and try it.
This adds a "ground" temporary to check
As far as house batteries, you can try same thing with jumper cables at seelevel.

[BrokeDown]

I went to the auto parts store and bought a couple of ground cables. I'll run them from the batteries to the chassis. If the ground connection is the problem, that should eliminate the problem.

[BrokeDown]

I did an ohm reading from the house battery negative to the chassis and had about 90 ohms. I installed the new ground cable and that brought it down to 15 ohms. I am reading directly next to where I drilled the hole to the negative post. I expected to see 0 ohms.

I did the same resistance check at the engine batteries and the reading was fluctuating between 5 and 7 ohms. I added the new ground and it dropped down to 3 to 4 ohms.

This has me wondering if I have some other problem in the coach.... may the inverter?

Any suggestions?

Thanks
John

[Kevin-Siesta]

John, If you are still checking this, did you find where the original grounds are connected to the chassis?

Thanks

[Ray,IN]

FWIW, over 80% of all 12V issues are the result of a poor/missing ground.