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Old 09-10-2019, 09:31 AM   #1
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Cole_Hersee 24213 Boost solenoid

I received my Cole_Hersee 24213 to replace the defective solenoid in my 2004 Winnebago Adventurer 35U. The Cole_hersee has 4 terminals but none are marked. I know one of the smaller terminals needs to go to ground. Does it matter which of the two smaller terminals is ground. I didn't come with any documentation. Also, does the chassis/house battery terminals matter?
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Old 09-10-2019, 11:03 AM   #2
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Did some searching online. It appears I would connect my LR wire to one of the smaller terminals. And run the other small terminal to a good ground.

And just swap over the house and chassis battery connections to each of the larger terminals on the solenoid.
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Old 09-10-2019, 05:31 PM   #3
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A four wire has two large terminals for the line in and line out (battery 12vdc). The two small terminals are to engage the switch (contacts inside the relay) by pulling the contacts closed. If you have only one small terminal it is for the positive that pulls in the solenoid. The second one has been hooked up internally to the housing of the solenoid. Find the ground with a mater and stick it under a mounting screw.
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Old 09-11-2019, 01:36 AM   #4
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OP is correct, hook existing small control wire to either small terminal and run a short jumper (16 gauge with proper terminal ends will be fine) from the other terminal to one of the mounting bolts.

Caution, do not loosen the innermost nuts on the large studs, and do not allow the studs or those nuts to turn. This would disturb the terminals inside and with them out of alignment they may not make good contact.

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Old 09-11-2019, 04:17 AM   #5
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I just installed the same thing in my 2004 35u last week. The small terminals are interchangeable. One is 12v + the other is grounded.
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Old 09-11-2019, 06:07 AM   #6
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Thanks all. I sort of figured the smaller terminals were interchangeable since they are not marked. I put my Fluke ohm meter on both terminals to the solenoid body. No continuity. So neither of the small terminals is grounded to the body of the solenoid. The reason you need to run a wire from one of the small terminals to ground.
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Old 09-12-2019, 06:26 AM   #7
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Installed and working. Thanks all!
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