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**Accelo** · 04-19-2022, 01:57 PM

I do have the TH400, do I need to route that Kick-down switch to something?

Yes, but the transmission will work with out it. Nice to have though.
12V to the switch and the switch to the connection on the side of the THM 400.
I provides 12V to the transmission when the truck is floored.
If you kept the old wiring maybe the wire is still there.
It is a separate wire as in not part of the main harness.

Circt 924 Green wire 14g

Connect HEADLIGHT SECTION A wire #924 (grn) to the Horn's hot terminal.
TURN SIGNAL SECTION wire #953 (blk) was connected in the turn signal
connector section of these instructions. The horn relay is pre-wired into the fuse
panel.

04-19-2022, 01:57 PM	#5
Accelo Senior Member Join Date: Mar 2015 Location: washington Posts: 2,194	Re: Relays needed after rewiring? I do have the TH400, do I need to route that Kick-down switch to something? Yes, but the transmission will work with out it. Nice to have though. 12V to the switch and the switch to the connection on the side of the THM 400. I provides 12V to the transmission when the truck is floored. If you kept the old wiring maybe the wire is still there. It is a separate wire as in not part of the main harness. Circt 924 Green wire 14g Connect HEADLIGHT SECTION A wire #924 (grn) to the Horn's hot terminal. TURN SIGNAL SECTION wire #953 (blk) was connected in the turn signal connector section of these instructions. The horn relay is pre-wired into the fuse panel. Last edited by Accelo; 04-19-2022 at 02:04 PM.