Wiper Motor type "A" vs type "B" questions

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   First some back ground info.
Working on our project '72 GTS, a wiper motor came with it in a box and it has an aftermarket wiring harness, so now original pig tails for the wiper switch or the motor.

So trying to create a wiring harness from the switch to the motor.

I believe I have the motor I have and the switch I have are not compatible and want to confirm with the group?

So here's what I think I know

From my research there was a type "A" and type "B" motor for the '72 torino and it appears the reason is that the Type "A" was early in 1972 and type "B" in later '72.

Type "A" looks to have a single 4 wire connection while the Type "B" has two connections, both are 3 pin/wire connections

Also it appears there are two types of switch for the '72 one is a 7 blade style the other is a 10 pin style

I have the type "B" motor and a switch with 7 blade plug.  Which I believe are not compatible, correct?

Edited by alreadyinuse - 08-December-2025 at 9:28AM

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alreadyinuse Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 03-July-2025 Location: NoCal Status: Offline Points: 22	Post Options Post Reply Quote alreadyinuse Report Post Thanks(0) Quote Reply Topic: Wiper Motor type "A" vs type "B" questions Posted: 08-December-2025 at 7:18AM
	First some back ground info. Working on our project '72 GTS, a wiper motor came with it in a box and it has an aftermarket wiring harness, so now original pig tails for the wiper switch or the motor. So trying to create a wiring harness from the switch to the motor. I believe I have the motor I have and the switch I have are not compatible and want to confirm with the group? So here's what I think I know From my research there was a type "A" and type "B" motor for the '72 torino and it appears the reason is that the Type "A" was early in 1972 and type "B" in later '72. Type "A" looks to have a single 4 wire connection while the Type "B" has two connections, both are 3 pin/wire connections Also it appears there are two types of switch for the '72 one is a 7 blade style the other is a 10 pin style I have the type "B" motor and a switch with 7 blade plug. Which I believe are not compatible, correct? Edited by alreadyinuse - 08-December-2025 at 9:28AM

peter.jenerette Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 08-February-2023 Location: Nevada, TX Status: Offline Points: 1054	Post Options Post Reply Quote peter.jenerette Report Post Thanks(0) Quote Reply Posted: 08-December-2025 at 9:22AM
	The switch differences would be Intermittent and non-Intermittent; they both use the same motor. The difference is the intermittent switch would connect to a little controller, and the main harness (which is the same for all torinos in 72), would go to the box. Instead of directly to the switch. The motor difference would be the "soft park" and "non-soft park", these are not interchangeable and do have different connectors in the engine bay.
	Pete Jenerette 1972 Gran Torino (H-Code - 4R70W) 2022 F250 XLT 7.3 2003 Thunderbird

alreadyinuse Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 03-July-2025 Location: NoCal Status: Offline Points: 22	Post Options Post Reply Quote alreadyinuse Report Post Thanks(0) Quote Reply Posted: 08-December-2025 at 9:43AM
	Thanks Peter I updated my post with the corrected pic of the 10 pin switch What is confusing me is that the wires called out on the 10 pin switch (14401 ASSY) match the connector locations for the TYPE "B" motor (for example 61 Y-R and 65 DG wires) The 7 blade switch doesn't show a 65 DG or 65 Y-R wire but does call out the wires needed for the type "A" motor I bench testing everything and I've been able to make the 7 blade switch work on the type "B" motor by connecting to the c-100 connection. I've grounded the 58W pin an routing power go the 61 Y-R pin for low speed while the 56 DB-O pin for high speed. I have nothing connected to the c-99 connection. The issue is that when switching off, the motor doesn't seem to park. Which appears to be the 63R wire

peter.jenerette Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 08-February-2023 Location: Nevada, TX Status: Offline Points: 1054	Post Options Post Reply Quote peter.jenerette Report Post Thanks(0) Quote Reply Posted: 08-December-2025 at 2:31PM
	The park switches on these get cruddy. On mine i did have to disassemble and thoroughly clean the park switch.
	Pete Jenerette 1972 Gran Torino (H-Code - 4R70W) 2022 F250 XLT 7.3 2003 Thunderbird

alreadyinuse Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 03-July-2025 Location: NoCal Status: Offline Points: 22	Post Options Post Reply Quote alreadyinuse Report Post Thanks(0) Quote Reply Posted: 09-December-2025 at 6:07AM
	Thanks, But I guess my question is around the wiring. I have a 7 blade connector style switch and a type "b" motor. Since I don't have a wiring harness I'm trying to make my own. With the combo of the 7 blade style switch and the type "b" motor there's two wires that should be plugged into the motor that are not represented on the 7 blade connector style switch BUT are on the 10 pin connector style switch. So I think I either need to swap switches to match the motor or swap the motor to the four pin plug type 'a'. If not then I'm wondering how to wire the switch to the motor properly, because the small 3 pin connector on the motor C-100 seems to control the speed, unsure what the other 3 pin connector C-99 does.