How does one change out the "rooster comb" in a TF 727? And should I?

Gerald Morris

Senior Member
Joined
Mar 9, 2016
Messages
2,303
Reaction score
1,185
Location
Tucson
Greetings Most learned Elder Moparians!

I've come on a gnarly little puzzle with this 1968 Newport beyond the usual easy references: the reverse light switching was set up for a MANUAL transmission! I've traced the violet and white 18 gauge wire pair meant for switching the back-up lights with the appropriate connector down where the carpet and padding begins on the firewall. I looked at the NSS selection available at Rock Auto, with 3 prong switches.

BUT THE CAR, AS I BOUGHT IT HAD THE SAME SINGLE POLE NSS THAT MY 1966 TRANSMISSION HAS, SO I HAPPILY INSTALLED IT WITH NO FURTHER THOUGHT, UNTIL NOW!

Furthermore, the starter relay was for a manual transmission. I replaced it with the proper one for an automatic transmission, hooked up the brown wire meant to protect folks from destroying their starter with the engine running, and THAT works as intended. I won't be starting the engine in gear anymore, as I did the previous one with the cracked block. Impressed the Babushka, but disturbed ME when I did it. Oh well.

ANYWAY, the reverse lights DID come on with the automatic provided, with SOME wire attached to the single pole NSS. As of now, the violet and white pair meant for the back-up lights go to the large rubber plug/grommet meant for a manual transmission.

I'll gladly accept the status quo with this odd car IFF the current lack of reverse light function arises from a dead fuse or loose wire dangling under the car, but I'm not betting on such easy luck. I only speculate that this might be so because I recall and the Babushka does too, that the reverse lights WORKED when we got the car. I wonder about that, given what I've found this evening, but we'll let this slide, for now.

If we're deluded here, then I think the BEST solution would be to replace the 1966 unipole NSS with a 1968 3 pole sort, BUT, only if this can effect restoring the reverse lights without dropping the transmission. I've searched the Forum a bit, and saw references to a piece inside the transmission called a "rooster comb" which seems to actuate the NSS. IFF I've read things aright, then can I replace whats in my 1965-66 727 with the proper 1068 one without inordinate labor and agony? In other words, can it be done without dropping the transmission?

I'll be looking for references on how this is done later tonight, but toddler-induced sleep deprivation is besotting me to an unhealthy degree. So I hope to cop some Zzzzs for the next 120 minutes or so.
 

carrman

Senior Member
Joined
Jan 1, 2011
Messages
1,024
Reaction score
830
Location
Medford, OR
We had to put another trans into my Newport, and in doing so we had the proper rooster comb in the tranny for the 3 pin switch. We bypassed the column switch since the finger that moved the switch has been missing ever since I got the car, and wired to the back up lights. Bingo, I have working reverse lights now. The rooster comb can be replaced with the tranny installed. Good time to install the part throttle kickdown too.
 

Big_John

Illegitimi non carborundum
FCBO Gold Member
Joined
May 21, 2013
Messages
16,315
Reaction score
22,252
Location
Marcellus, NY
Go back to your first thread on the subject and read the first paragraph of my posting for all the instructions on changing the rooster comb that you'll need.
 
Top