Need a little help wiring Spot lights on trailer to switch in cab

I have a tanker with rear spot lights and I want to re-wire to be able to turn them on via cab switch, rather than using switch on trailer. I've torn into the trailer plug (both trailer and truck side) and need some help as I am lost...

Current configuration- The spot lights are connected to a 15A switch (on trailer), that gets power from the "clip light" switch in cab / black wire on 7-pin trailer connector from truck. In order to turn the spot lights on, I have to ensure the clip light switch is on (which normally is during night time driving and then manually turn on/off the spots using the trailer switch.

* I would like to wire the spot lights into either the "load lamp" switch/lights or use one of the extra switches I have in the dash if possible

*I would also like to use current wiring both trailer side and trailer/truck 7-pin connector if possible.

The 7-pin wiring and looked at the wiring diagrams and found the AUX wire (blue from trailer 7-pin plug) and it goes to the fuse panel FB4 - to the AUX/ABS 30A fuse. When the truck is on, the AUX connection on the trailer plug has constant power... loses power when the key is in the off position. I assume this is for the trailer ABS system...

*I can't use the AUX/ABS wire in the 7-pin trailer plug can I???

I would like to tackle this myself and gain the knowledge... if I have to take it to the shop mechanic, I can...

Anyone with any words or wisdom or quick advice...

 

ok. thank you for confirming that.

When you say "pigtail", are you just referring to a male/female-4pin trailer-type connector? (different verbage for probably the same device)

I do have a 4-pin plug wired back there, for use when i do belly dump work. Looks like an easy solution is to install a 4-pin female plug on the trailer side and wire the spot lights into that or wire in another switch???

Bad design in my opinion... should have made them default 8-pin connectors, so a guy could have a spare in situations like this.

 

makes sense!