Upfitter switches problems questions ?? - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 08-07-2008, 04:47 PM Thread Starter
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Question Upfitter switches problems questions ??

ok so I was trying to hook up a set of lights and I used a relay to provided power and ground to the lights then I ran the + switch line off the relay to the 30a upfitter switch and then I took the - line off the relay and gave it a ground. I flicked the switch with the truck running and get no light. So I then unhook both line that were running to the upfitter and put them on the battery and the lights work fine. what am I doing wrong is there some wrong with my upfitters.
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post #2 of 3 Old 08-11-2008, 10:14 AM
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were the upfitters factory installed? Which wire are you hooking into? The wires under the hood, or under the dash?

If you are tapping into the wires under the hood, they are not connected to anything, they are just bare wires that run through the firewall and terminate next to the upfitter wires under the dash.... You will need to make an additional splice.

Next step would be to test for a completed circuit at the relay. Connect a meter to the ground and wire coming from the upfitter switch as close to the relay as you can get it. Turn on the upfitter switch and see if you get voltage. Note, you need to have the ignition in run for the upfitter switches to function.

Hope this helps.
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post #3 of 3 Old 08-11-2008, 02:05 PM Thread Starter
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Quote:
Originally Posted by jbiersba View Post
were the upfitters factory installed? Which wire are you hooking into? The wires under the hood, or under the dash?

If you are tapping into the wires under the hood, they are not connected to anything, they are just bare wires that run through the firewall and terminate next to the upfitter wires under the dash.... You will need to make an additional splice.

Next step would be to test for a completed circuit at the relay. Connect a meter to the ground and wire coming from the upfitter switch as close to the relay as you can get it. Turn on the upfitter switch and see if you get voltage. Note, you need to have the ignition in run for the upfitter switches to function.

Hope this helps.

WOW that makes alot of sense thank you so much
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