Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Display Modes
Old 02-27-2021, 02:59 PM   #1
Senior Member
gahamby's Avatar
Join Date: Sep 2017
Location: VIRGINIA
Posts: 611
7 pin upgrade to boat trailer

My van is 7 pin. The trailer is 4 pin. I had a shaky 7-4 adapter. I wanted to access the 12VDC trailer power to charge devices in the storage box, like the VHF and the outboard battery, while towing. I also wanted a 120VAC pass through for shore power.
I mounted a waterproof junction box on the storage box.Coming out, it has a 7 pin lead to connect to the van, a 4 pin lead to connect the trailer lights, and a 120VAC inlet. Inside the junction box there is a terminal strip. That breaks out the trailer light wiring and the 12VDC.
There are 2- 12VDC fused cigaret lighter plugs facing into the storage box as well as a 120VAC outlet. The 120VAC powers a 300w cabin heater that keeps the gear dry while stored. At the campsite I can charge the electric outboard battery off of shore power. Now I can keep the lid closed and locked.
Attached Thumbnails

'07 GMC 2500 6.0
gahamby is offline   Reply With Quote
Old 02-27-2021, 03:40 PM   #2
Senior Member
Twoxentrix's Avatar
Join Date: Mar 2015
Location: Maryland
Posts: 3,033
Now that's inventive!

Twoxentrix is offline   Reply With Quote
Old 02-27-2021, 05:51 PM   #3
Senior Member
marret's Avatar
Join Date: Nov 2016
Location: FL and VA
Posts: 1,763
Yeah, sure is. Nicely done.
2008 GMC 3500 Quigley Weldtec 4x4 Savana SMB
marret is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Sportsmobile Registry



El Guapo Rojo

Add your Sportsmobile
Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 08:56 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2023, vBulletin Solutions, Inc.