Boost Relay Gremlins

[Captain Dan]

My Echo charger was wired backwards from the factory and hadn't worked for the last 9 years until I fixed it, very common problem. The previous owner kept a charger on the chassis batteries. Check the wiring if you're going to hook it back up.

Dan

[gruse]

Originally Posted by Fredward

Now we are having a problem locating a normally open; close at 15psi oil pressure switch. This is what activates the relay to charge house batteries when the engine is running. It needs to have two connections on it. Any ideas?

Here's a link to another post where I shared some of my experiences with the oil pressure switch with my older C-12, which probably isn't identical to the newer coach w/ C-13. Mine required a sensor with NO and NC circuits to appease both the ECM and the boost relay.
http://www.irv2.com/forums/f112/no-a...es-364505.html

In general, Honeywell makes the Series 5000 pressure sensor in many different configurations and they can be ordered through a variety of distributors. 15PSI NO = 76052
https://sensing.honeywell.com/honeyw...oductsheet.pdf

[TR4]

Originally Posted by Fredward

Now we are having a problem locating a normally open; close at 15psi oil pressure switch. This is what activates the relay to charge house batteries when the engine is running. It needs to have two connections on it. Any ideas?

You should be able to find one here;
Oil Pressure Switch Sensor Specifications search

Bill

[Fredward]

Yes we found one. Just the first one we bought was normally closed, and we need normally open. We have not had the chance to test fire the engine yet as we have a couple things going on in the engine compartment.