Wiper Motor wiring Woes

[Beeson]

Please can anybody help (as I have wasted far too much time on this already)

My car is a series 1.5 2+2 1968 and I have taken delivery of a new autosparks wiring loom for the car. The problem I have is that the loom is wired for a (and do forgive me if I am wrong) square DL3 wiper motor but the wiper motor I have on the car is the round bodied Lucas 15W jobby, with the 5 terminal push in connector.(Please see photos)

As is so often the case, the car and it's wiring was dismantled so long ago and so few photos were taken (it was all 35mm film back then and off to Boots to see what came back) that I have not a chance of remembering what went where. A lesson to us all in the digital age - take as many photos/videos as you can, cos your going to need them at some point. I'm learning the hard way sadly.

My question is: how can I ( if it is at all possible) make the wiper motor work, with what I have at my disposal? ie. connecting the wires from the six terminal toggle switch to the push on connector block. As you may all have noticed from my utterings, I am struggling a bit with the dark art of car electrics. So would greatly appreciate an answer layman's terms. I have spent hours, day's week's staring at series 1 &2 wiring diagrams trying to work it out but I am now having to throw in the towel. All help gratefully received.

Wiper motor and wires from the six terminal toggle switch

5 pin Block connector to connect switch wiring to wiper motor

Toggle switch 6 terminal


Wiper motor showing id plate.

[Gfhug]

Mark, with the rocker switch it is different to the standard S1 so the S2 wiring would, imho, be more appropriate. You may have to buy some additional wire to make up fresh lines to and from switch and motor.
I found, though, that the diagrams for the S2 aren’t quite correct as you can see if you follow my questions and observations in this topic:
viewtopic.php?f=9&t=4718&start=20
Please have a read through (posts 30 to 44) then I’ll try to answer questions if what I wrote can jar my memory.
Sorry to not answer immediately, but I’m off to review that topic myself.
I hope it can help a bit. Yes, it is about intermittent wipers but the wiring for the S2 is discussed in detail.

Geoff

[Simonpfhc]

Hi Mark,

Looks like you have a wiper motor from 1974 (if I’m reading your base plate correctly). This is different to the motor you should have. Series 1.5’s used a DL3A motor, which is much simpler in operation and IMO the best motor for an Etype. The DL3A doesn’t use the park switch which is mounted on the wiper rack But is set at the motor itself. The standard series 1.5 used a wiper rack with no switch.

So the first question is what wiper rack do you have as the DL3 motor will need a switch mounted there.

Presuming it was working before, then the switch will be there and you will need to work out from the wiring diagram where the connections will go. You have the correct switch for the DL3 but I’ve never seen that connector block before and don’t think it is factory. That may be the misleading item.

Thanks.

[Gfhug]

Mark, search for 15W and you’ll see comments that will help you understand which motor you have and the differences between wiper motors. Quite a few from the topic I included above.
You may need to jury rig up some wires to the switch and wiper only from a 12 volt source via an inline fuse. Then check out the connections as per S2. I’ll try to get into the garage this weekend to take a few photos to help.

Good luck

Geoff

[Beeson]

Thanks Simon and Geoff for you help.
Looks like the plot thickens. I shall investigate further
And report back.

[Beeson]

Hi All
A quick update after checking the wiper rack. It does have the parking contact in place. See photo

Many thanks

[tinworm]

You don't need to use the Dl3 parking switch on the rack - just leave it disconnected - the motor has its own switch. I believe you need a different switch for the dash than the S1 has (the switching requirements are different) and the S2 has a rocker switch here - so it would not fit into the S1 panel - easy to find as its a Lucas part . Someone has done the conversion on here back along.

Barrie

[Gfhug]

I've just realised you said toggle switch not rocker switch. That slightly muddies the waters from what I was thinking you could do. Will need to see how the toggle and rocker switches compare. Though maybe you'll get the same result.

Geoff

[Beeson]

Great thanks Geoff

[Gfhug]

Mark, I’ve looked at a couple of S2 wiper switch of the rocker style, they are different to each other which doesn’t help me answer your problem, and I don’t have an S1 toggle switch. Sorry, however….
I’m going to ask you to do a little bit of downloading and comparing diagrams. Firstly from our knowledge base, technical information and documentation, please download and print the S1 4.2 wiring diagram and the same for the S2. Both are in colour and you’ll only need to print the area showing the wiper motor and switch.
Then also download this: http://lotus-europa.com/manuals/misc/electrical/16w.pdf
It’s for the 16W wiper but essentially the same as the 15W. It’ll help you understand the parking system which is different to the older type motors.
What you need to do is run wires from your S1 toggle switch as if they come from the S2 rocker switch.
Note the S2 diagram shows a black earth on the switch, there isn’t one on mine and others have agreed.
As suggested before, you need to run wires solely to the switch and wiper motor. Do you have your old loom? You could use the wires from that or buy a few metres of suitable size cable. It can all be the same colour so long as you label it correctly. It’s for test and set up not permanent installation. Fit an inline fuse to the power supply from your battery to the switch and motor. Then it’ll be time to test, have several spare fuses. The wiper doesn’t actually take much current so not the same as the relevant fuse in the car.

Enough for the moment. When you have got yourself ready either post here or we could communicate via pm or even telephone.

Good luck.

Geoff

[Beeson]

Thanks Geoff
That’s an amazing amount of help. I will indeed get on to this next week and report back. Once again thank you for much appreciated assistance