Need 12V pick-off for trailer/toad connector

[Mahlon]

Fellow Workhorseians,

I found that the 12V pin on my coach's trailer/toad connector isn't wired up. Where on the chassis (not the coach) can I get 12VDC switched from the accessory circuit that I can then run back to the connector with 40-odd feet of wire, plus a blocking rectifier & fuse?

I want to use this to keep the toad battery charged. I'm hoping that there's an unused terminal post in the chassis fuse block or relay panel that I can use for this.

[Mahlon]

Fellow Workhorseians,

I found that the 12V pin on my coach's trailer/toad connector isn't wired up. Where on the chassis (not the coach) can I get 12VDC switched from the accessory circuit that I can then run back to the connector with 40-odd feet of wire, plus a blocking rectifier & fuse?

I want to use this to keep the toad battery charged. I'm hoping that there's an unused terminal post in the chassis fuse block or relay panel that I can use for this.