mat in tn Posted August 2, 2022 Share Posted August 2, 2022 They did not. They are square. Just like the ignition. I'll have to but a marker ring around it. that is the same problem that i have run into. I took the door keys and had a lock shop cut a pair with the round heads. they looked at me funny, but the old guy got it. they are blank number h50 and h51 and somehow the replacement parts co. did not get the memo. Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted August 3, 2022 Share Posted August 3, 2022 that is the same problem that i have run into. I took the door keys and had a lock shop cut a pair with the round heads. they looked at me funny, but the old guy got it. they are blank number h50 and h51 and somehow the replacement parts co. did not get the memo. Don't the cylinders have opposite profiles? You can't fit an oval head key in the ignition and you can't fit a square head into the door until Ford started using a square key for door cylinders in the Aeronose around 1990. I know I deliberately bought later cylinders so I could use one key for everything when my ignition finally wore out. Link to comment Share on other sites More sharing options...
Powerman5K Posted August 3, 2022 Author Share Posted August 3, 2022 Don't the cylinders have opposite profiles? You can't fit an oval head key in the ignition and you can't fit a square head into the door until Ford started using a square key for door cylinders in the Aeronose around 1990. I know I deliberately bought later cylinders so I could use one key for everything when my ignition finally wore out. My 80 F100 had 1 key for everything. Square head. Can't confirm it was original to the truck but it is a genuine Ford key and not an aftermarket. Link to comment Share on other sites More sharing options...
grumpin Posted August 3, 2022 Share Posted August 3, 2022 Don't the cylinders have opposite profiles? You can't fit an oval head key in the ignition and you can't fit a square head into the door until Ford started using a square key for door cylinders in the Aeronose around 1990. I know I deliberately bought later cylinders so I could use one key for everything when my ignition finally wore out. My 86 did. My Bronco has two keys, one for the doors and ignition and one for the rear window. Don’t know why they couldn’t key them the same. Link to comment Share on other sites More sharing options...
mat in tn Posted August 9, 2022 Share Posted August 9, 2022 My 80 F100 had 1 key for everything. Square head. Can't confirm it was original to the truck but it is a genuine Ford key and not an aftermarket. I would love to find a full set of ignition/door locks that only use one key. not familiar with that ever being available before they went to the h54 (longer) key in the 92-body style which uses a different ignition cylinder altogether. different column. Link to comment Share on other sites More sharing options...
Recommended Posts