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Maureencat0 · 07-20-2019, 07:36 PM

Hi first post on forum. I am looking for coach electrical wiring diagrams for my 93 HR Endeavor. Former owner may have used a cheater? wire. I believe we may be in an unsafe condition as there is an electric extension wire with cut ends coming from 1000 watt inverter and running under LP gas tank to main panel. Husband is an electrician but never worked on RV. We are thinking may need to rewire the whole RV to be certain it is safe...ugly job ahead.

Also I have original owners manual and ford chassis manual. Willing to share with anyone who needs this. Hopefully right place to post this request. Any help greatly appreciated.

leadman · 07-21-2019, 06:44 AM

RVs are definitely different than stick and brick wiring. If it were me I would replace the wiring from the invertor that you have identified as bad first. Then take a look at the rest of the wiring. I would not get carried away ripping out wiring just to replace it.
Since you husband is an electrician he should be able to safely install proper wiring from the invertor and route it so it is safe. The same good common sense he uses in his work will work well on an RV. The wiring colors are varied in an rv so he will have to test for hot and grounds.

Check each system for proper operation and write it on a list as being tested. Most time the operating manuals can be found here in "stickies" at top of pages or online.

You may want to post this in the "Vintage RV" section also.

MSHappyCampers · 07-21-2019, 11:12 AM

Hi ! Welcome to IRV2! We're sure glad you joined the gang!

Congrats on the new rig! Wiring diagrams can be really hard to find! Noticed you are new on IRV2 and wanted to say hello! Have fun and keep her between the ditches!

Good luck, happy trails, and God bless!

Gary RVRoamer · 07-22-2019, 08:52 AM

That inverter surely wasn't standard in the original, so OEM schematics probably wouldn't help anyway.

Adding an inverter does, of course, involve substantial mods to the 120v wiring. Just what those might be depends on what the inverter is intended to serve. Your husband probably needs to educate himself on inverters, but other than there being a secondary 120v power source (the inverter), the 120vac wiring is not any different than residential wiring. It's normal split phase 120/240v. However, there are multiple ways an inverter or inverter/cahrger can be added, so further investigation is needed.

Since the inverter output runs to the main load center, it would seem the intention was to power the entire coach 120vac system via the inverter. To do that, the RV's built in converter/charger has to be disabled when the inverter is operating. This can be done manually, e.g. flip a breaker, or automatically via a relay.

You mentioned "cut ends", so it sounds as if the inverter is no longer wired in. Do you know if it is functional atall? As it presently stands, you can perhaps just ignore it.

I'm the co-author of an article in inverter installation in an RV - maybe that will help your husband understand what was done..

RV Inverter Install: DIYRV

mobilemike · 07-22-2019, 09:17 AM

Finding a single circuit with poor or hazardous instillation, tgen thinking the coach needs a complete rewire is a huge jump.

Usually a shoddy instillation like that is easy to remove and reinstall correctly. You must explore more to find out what the prior owner was attempting to do and remove that stuff.