Build update 2

[ArdWrknTrk]

I was more concerned about speed (cruise) control if you have that
I know the horn connections are different and use a relay if you have the A&B connectors.
I think this has to do with how speed control has a given resistance when you push the buttons on the horn pad, but I'm not expert because my truck is a lowly Custom....

[Ifitaintbroke]

Mine originally had speed control, but I've stripped that out. Don't need any frills on this truck. Still have all the parts.

[ArdWrknTrk]

I posted the EVTM page in TJ's thread comparing the relay v/direct horn when Gary was trying to troubleshoot L'il Blue.

I know that if the truck came with speed control there was a relay in between the two plugs.

[Ifitaintbroke]

Does that matter? I test fit a Bricky non-speed control steering wheel and the horn works fine.

[Ifitaintbroke]

Wait a minute... the truck I'll be working on(not today as the yard was closed) is an 87 F150 Custom. It's the one I got the wheel from. Did not have speed control. I'm not sure whether it had tilt or not. Will have to see. Does yours have tilt? Thinking about it more, when I pulled the wheel off, the turn signal switch looked very different than mine for the tilt wheel. I wasn't thinking about it at the time, just noticed it was different. So, it should be the non-tilt as those were the only two variations, correct?

[ArdWrknTrk]

I think the variation in switch was tilt v) non tilt but the speed control changes power v/ground through the wheel. (I'd have to look closer at the schematics, since my basic Custom has neither)

[Ifitaintbroke]

I wonder if tilt and speed control went together... meaning you couldn't get a non-tilt with speed control or vice versa. The reason I think that is because there are only two switches, and the determining factor is tilt. Speed control is not mentioned in my parts system. Or, it could be that both switches are electrically the same, but the pinout on the truck side is different to accommodate speed control. What a mess!

[ArdWrknTrk]

That's one of the challenges of the EVTM
It only shows you one circuit at a time.

I can't say that you couldn't get cruise control without tilt, but you'd definitely see both in an upscale XLT.

[Ifitaintbroke]

Yes, mine is an XLT Lariat.

[Gary Lewis]

Speed control and tilt columns could be had separately.  The turn signal switch was different for the tilt vs non-tilt column.  The speed control worked via the horn pad and had three resistors in it that told the unit which button had been pushed.

[Ifitaintbroke]

So, the difference on speed control vs non would be the pinout on the truck side harness.

[Gary Lewis]

Not really. The steering column and truck harness is the same as w/o speed control. But there’s a jumper, C305A in the schematic, that goes from the steering column harness to the truck harness and includes the speed control.

[ArdWrknTrk]

Jeff posted a picture from the EVTM showing how the two crescent plugs go together down by the ignition switch.

[Ifitaintbroke]

It did occur to me that it wouldn't make sense for Ford to make a different body harness for the trucks with options like speed control. That's just illogical from a manufacturing standpoint.

[ArdWrknTrk]

Very similar, the intermittent wipers are a module and grounded switch that fits the same plug as 2-speed, or the NSS for Auto's and clutch safety both fit one harness and it's just a matter of the one not used being jumpered.

ETA the harness for '84-87 gas trucks is set up to accept EEC or Duraspark-II ignitions

[Ifitaintbroke]

Truck is getting shelved for a while. May be a month or two before I work on it again.

[Ifitaintbroke]

Not working on the truck yet, but I did get another steering column. Buuuuuuuuuttttttttttttttt... it's from an auto. That shouldn't matter, and in fact, I'd rather not have that stupid ignition lock anyway.

[ArdWrknTrk]

I guess you're good as long as you have some way to make sure it stays in the Park position without any indicator in the cluster.

Did it come with keys?

[Ifitaintbroke]

It did, but I'm using my old lock cylinder. Does it matter what position the shift ring thingy is in?

[ArdWrknTrk]

You don't like the button, but with an automatic column the key will only come out in park.
I asked about the key because the only non-destructive way I know to get the cylinder out is to have it in the Run position

There are simple ways to defeat the lock cylinder.
I won't discuss that on the forum..