'01 trailer connector wiring
#1
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'01 trailer connector wiring
Last night I started to install the trailer connector & harness for my GN in the bed of my '01 CTD. Located a spot I was happy with and cut a 2" hole in the inner bed wall for the new 7-wire connector. My 100' spool of 7-conductor trailer cable showed up yesterday so I was set to run the cable and splice it in. I found a place that was accessible and acceptable to me to splice into the wiring harness, but I ran out of light and didn't get the tie-in done. I decided to tie into the trucks harness on the frame rail well before the stock trailer connector on the receiver hitch for two reasons:
Anyone have any insight?
Also, instead of hooking into the 12 gauge fused battery wire, I'm thinking about pulling a new 10 gauge conductor from power distribution block (fused, of course) back to the trailer connector tie-in. Also thought about pulling a 10 gauge ground from the connecter tie-in all the way up to the battery to ensure a GOOD ground for the trailer.
- Didn't want to run the extra length of cable to "backtrack" to my new connection point.
- The factory trailer connector steps the trailer tow relay (used to power the trailer running lights) wire, the trailer brake signal wire, and the fused B+ wire down from 12 to 14 gauge.
- BR/RD - 16ga - right turn signal
- VT/BK - 18ga - back-up lamp feed
- RD/OR - 12ga - fused B(+)
- BK/OR - 12ga - trailer tow relay output (running lights for trailer)
- LB - 12ga - trailer brakes signal
- BK - 12ga - ground
- DG/RD - 16ga - left turn signal
- BK/YL - 18ga - park lamp relay output (running lights for truck)
- LG/TN - 18ga - ?????
Anyone have any insight?
Also, instead of hooking into the 12 gauge fused battery wire, I'm thinking about pulling a new 10 gauge conductor from power distribution block (fused, of course) back to the trailer connector tie-in. Also thought about pulling a 10 gauge ground from the connecter tie-in all the way up to the battery to ensure a GOOD ground for the trailer.
#4
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Originally posted by njoverkill
Mechanos I have a 01 FSM I can take pics of the wiring harness diagram this weekend...
Mechanos I have a 01 FSM I can take pics of the wiring harness diagram this weekend...
#6
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I got my spool of trailer cable last Tuesday.... it's nice stuff. 4 - 14 gauge, 1 - 12 gauge and 2 - 10 gauge conductors. I was pretty surprised at how flexible it is... I thought it would be stiffer than it is. I haven't rewired the gooseneck yet, but I finally got a chance to splice into the trucks harness and run some cable up to a new outlet in the bed for my GN.
Spliced into the running lights (feed from trailer tow relay), left & right turn signals, back-up lights and trailer brake signal wires from the truck's harness right behind the fuel tank. I chose not to splice into the 12 gauge ground and 12 gauge fused (+) wires in the harness. I plan to run a 10 gauge wire from the power distribution center through a fuse back to the new harness for the connector to supply power to the trailer. I'll also run a 10 gauge ground from the battery back to the connector harness to ensure the trailer has a good ground. I haven't decided yet, but I may run the 10 gauge power wire through a relay that is activated by the ignition switch..... I need to think about just what I will be powering with it and just how I will want to use it.
I never did find out what the mystery wire (#9 from above) was for... by probing the wires with a test light, I determined that I didn't need it.
Spliced into the running lights (feed from trailer tow relay), left & right turn signals, back-up lights and trailer brake signal wires from the truck's harness right behind the fuel tank. I chose not to splice into the 12 gauge ground and 12 gauge fused (+) wires in the harness. I plan to run a 10 gauge wire from the power distribution center through a fuse back to the new harness for the connector to supply power to the trailer. I'll also run a 10 gauge ground from the battery back to the connector harness to ensure the trailer has a good ground. I haven't decided yet, but I may run the 10 gauge power wire through a relay that is activated by the ignition switch..... I need to think about just what I will be powering with it and just how I will want to use it.
I never did find out what the mystery wire (#9 from above) was for... by probing the wires with a test light, I determined that I didn't need it.
#7
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Join Date: Oct 2002
Location: Alvin, Texas
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I had the same problem when I first wired up my GN as well. I didn't use it and everything works fine. Be sure you solder all the connections. I didn't the first time and had a terrible time with bad connections from time to time.
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