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Old 06-16-2009, 02:40 PM   #1
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Hello, I have a tester to test my truck RV connection to see if all my lights are working. But do they make a tester to check the RV connection?

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Old 06-17-2009, 04:50 PM   #2
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Sort of.. Use a multi-meter on OHMS, If the connector is a "Flat 4" then he odd pin is Ground and gets the negetive probe (note, not all meters use black as negative when in OHMS mode, Mine does, but you may need to test yours)

The other 3 should show something other than open circuit, in fact just a few ohms on the lights, I'm not sure on brakes (No brakes on a flat 4)

If it's a round 7 pin you can either hook the negative lead to the ground pin, (you will have to look that up yourself) or to the chassis, again, all pins that are used should show something other than "open circuit"

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Old 06-18-2009, 07:10 AM   #3
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You can use a 7 pin to 4 pin adapter and your 4 pin truck tester. Won't tell you anything about the brakes or other "extra" pins, but will still report the stop/tail/turn light status.
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Old 06-19-2009, 02:42 PM   #4
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Yes. There is a product sold that you plug your RV into, it tests every 12V circuit in the umbilical cord.http://rv-news.com/dec2001/displaycase.cfm
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