Location of battery isolator & relays in '04 gulfstream 5230

Hey Glenn, if you're still watching this thread...

I just found the boost relay and battery isolator I was looking for .... they are mounted on the outside, rear of the battery box which faces the center of the chassis.

Never had much luck finding the relays. Had to move on to other projects. Electrical system is functioning correctly now that I replaced the house battery, an automotive battery previous owner installed, with a DieHard deep cycle battery.

I wonder if Gene ever found the boost relay... I'm looking for mine and cannot find it anywhere .. I looked

• under the hood
• under the chassis below driver
• in elec dist box

anyone have another suggestion?

Thanks Glenn, nothing like that in my battery compartment, although there are 3 circuit protectors in there.

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Thanks Bud, RJ, CG, and Dusty.
My steps are in the back of the coach on the curb side and the battery is in a coach compartment that is outside behind the driver's seat, there are 3 circuit protectors also in that compartment. Possible that they could be behind that, under the coach, I will look.

I will check under the hood and if nothing turns up we'll do the battery switch and listen for a solenoid in different areas. (there is a black box under the driver's seat, so maybe a quick switch/listen there would be a good/easy starting point)

We had an '03 Itasca. That relay was behind 2 panels in an out side storage boot. The first panel was the back of the boot. Behind that there were some fuses mounted, then behind that panel was the relay.

Have you checked under the side steps? Sometimes the compartment is divided in two, with half housing the house batteries, and the other housing some electrical components.

There is an overall lack of standardization in the RV industry. However, I used to have a 1998 Gulfstream and it did not have a manual battery switch or disconnect. It did have a solenoid for charging the coach battery under the hood on the driver's side. It looked exactly like an old-style Ford starter solenoid (which is probably what it was). Your coach may be completely different, but hopefully this info will help.

Have a helper operate the battery disconnect and listen for the relays to energize and de-energize. Some are stuffed under the passenger seat.