rover3l123
Rover Fanatic
Originally from Llangollen area North Wales and relocated to the US in 1995 with the P5
Posts: 174
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Post by rover3l123 on Dec 9, 2020 23:41:12 GMT
Has anyone developed a list of the Lucas part numbers for the various dashboard switches. I did a search in the P5 and P5B Electrical sub-forums but did not see anything.
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Post by Phil Nottingham on Dec 10, 2020 5:25:49 GMT
Not that I am aware of. All but one are only used on P5s/P5Bs and Mk1s are different
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Post by Mike’S-a-loon on Dec 10, 2020 7:01:20 GMT
Actually, I was parting out a P6 2000 years ago, and kept the dash switches. The only difference between those and the P5 ones were the actual toggle bit. I was able to swap the P5b toggles onto the P6 switches by pushing out the pivot pins. Just FYI. Btw, just reread what I wrote, and it wasn’t 2000 years ago! It was an original P6.
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rover3l123
Rover Fanatic
Originally from Llangollen area North Wales and relocated to the US in 1995 with the P5
Posts: 174
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Post by rover3l123 on Dec 12, 2020 2:05:26 GMT
I have found out one part number which may be of interest to others Lucas part number 78416 is for the rheostat switch that is either for the variable speed for the windscreen wipers or the dimming function for the panel lights. These switches are very similar, but they differ in terms of the width of the rheostat winding. The size of the winding will determine the maximum resistance of the rheostat. The other switch (part number to be determined) has a wider winding which is almost the full width of the ceramic insulator The second part number I found is Lucas 34562. This is a three position switch which is described as a lighting switch and I believe it is for the parking light / off / both side lights positions. More research to follow
LUCAS 78416Attachments:
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Post by Phil Nottingham on Dec 12, 2020 5:50:32 GMT
The wiper rheostat must not have the "off" position that the panel light switch does. The panel dimmer is not much use anyway epecially if leds are used so may as well use the standard Lucas On/Off
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Post by johnwp5bcoupe on Dec 12, 2020 9:56:52 GMT
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rover3l123
Rover Fanatic
Originally from Llangollen area North Wales and relocated to the US in 1995 with the P5
Posts: 174
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Post by rover3l123 on Dec 12, 2020 11:20:49 GMT
That is a good reference list. Thank you It gets confusing with the multiple part numbers Lucas assigned over time to the same switch. |
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Post by Phil Nottingham on Dec 12, 2020 17:46:15 GMT
Thanks have made a STICKY
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Post by johnwp5bcoupe on Dec 13, 2020 9:09:15 GMT
Thanks have made a STICKY Only half the list is shown when you click on it Phil? |
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Post by Phil Nottingham on Dec 13, 2020 10:34:28 GMT
Both halves are the same? PS the main light switch equivalent will not have the one-side park function without modification
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Post by ray on Dec 16, 2020 16:37:34 GMT
Interestingly my light on/off/Park switch overheated with lights going off, last weekend on my trip home. I have a new one ordered, a lucas replacement number. Looks like the one on a known suppliers sight. I'll try to come back here if it's right when it arrives.
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Post by Phil Nottingham on Dec 16, 2020 16:47:42 GMT
The light switch really needs a relay to reduce the load. Make sure the Lucar terminals are tight as if slack they will overheat again
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Post by johnwp5bcoupe on Dec 16, 2020 17:22:11 GMT
Interestingly my light on/off/Park switch overheated with lights going off, last weekend on my trip home. I have a new one ordered, a lucas replacement number. Looks like the one on a known suppliers sight. I'll try to come back here if it's right when it arrives. Have a look here Ray Switches |
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Post by ray on Dec 17, 2020 12:31:14 GMT
John, Thanks.
I'll check against this when the new one arrives.
cheers Ray
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