Seems that I've been bit by the "assume" mantra again... Don't assume, 'cause it'll make an *** out of U and ME.
When I was doing the rear wiring on #9365, I prepped for reverse/backup lights. I assumed the switch on the Tremec was an N.O. (normally open) switch, that closed when the gearbox went into reverse. It appears that this is not the case. It goes "open" on shifting to reverse.
Question is:
Does Tremec offer a N.O. reverse switch?
Are you sure your on the right switch and not the neutral safety switch. The reverse switch is on the tail shaft and should be a N.O. The neutral safety switch is closed in neutral and open in all gears.
The reverse switch looks to be on the DS mid section. The neutral safety switch is on the tail section. The manual shows F7 as the reverse switch, and F18 as the neutral safety switch.
If Brute Force doesn't work, you're not using enough of it. Basic Stuff: MK4 Complete Kit #8439, Wilwood's, 17" Halibrands. Extra Stuff: Stainless brake and fuel lines, Breeze cooling, Battery mount, SS Roll Bar. Old Fart Stuff: Heater, Seat Heaters, Footbox Fresh Air, Stereo, Keyless ignition, Power Steering, Hyd Clutch. Young & Dumb Stuff: 427w Dart, TKO600, 3 link Moser M9/Ford 9", 3.5:1, Eaton TruTrac Posi. Graduation Thread
Yep, I got them backwards, The backup is forward and neutral on the tail shaft. But connecting to the correct switch should make the reverse lights work.
Mark... your pic/diagram is correct. The reverse light switch is about centered in the driver's side of the main case.
(Like a knucklehead clonk.gif, I left all my tools on the cart at the jobsite, knowing that my "home" meter is a K.I.A. - coulda saved myself a bit of work & embarrassment with a simple check with a meter!)
When I ordered my trans from Forte's, I also ordered a reverse backup switch (not knowing one was supplied/installed with the gearbox). The "replacement" switch has a Weatherpak connector molded in, unlike the raw studs from the factory. I chose to swap them for the better connection/waterproofness/etc.
If you're going to swap to the different switch, the good news is the switch is "dry" - It's above the level of fluid in the case - no cherry-juice bath. **However there is a very thin nylon sealing washer under the head of the switch**. Look out for this as it can get stuck to the case or the switch, be sure to transfer it.
I just zip tied the pigtail up and out of the way in case someone in the future wants to connect it.
FFR #8833 289 FIA 3-link
1965 289, TKO600 from Forte's Parts Connection
Body and Paint by Mike's Auto Restoration
Picked up 3/5/2016, First start 4/22/2017, MA legal 7/11/2018
Build Thread http://thefactoryfiveforum.com/showt...FIA-build-8833
"Insanity is contagious" - Joseph Heller
FFR #8833 289 FIA 3-link
1965 289, TKO600 from Forte's Parts Connection
Body and Paint by Mike's Auto Restoration
Picked up 3/5/2016, First start 4/22/2017, MA legal 7/11/2018
Build Thread http://thefactoryfiveforum.com/showt...FIA-build-8833
"Insanity is contagious" - Joseph Heller
one side of the reverse switch to ground will work. Just make sure you use an ignition switched positive for the feed to the reverse lamp, otherwise if you park the car with transmission in reverse you will end up with the lamp on all the time.
Cheers,
Nige
Last edited by Nigel Allen; 02-21-2023 at 03:36 PM.
Mk.4 FFR supplied Right hand drive
Received 12/2012 completed 12/2019
Gen1 Coyote / TKO600 / IRS
Lots of mods to make compliant for Australian design rules