[Healeys] Tonight's Wiring Dilemma

[Alan Seigrist]

It's a relay.

All you need to do is hook power up to it and then check that the switch is
going on and off correctly... C2 and C3 are likely the same thing as C1 and
C2.



On Fri, Jan 22, 2021 at 6:33 AM <gradea1 at charter.net> wrote:

> Lucas being Lucas, there were many versions of similar parts..mostly to
> avoid inventory taxes. They still got caught.  However, the 2 overdrive
> relays 33177 were the same part number from chassis 138031 to 228046 when
> they then went to one relay-same number.  Then the screws mounting the unit
> were changed but not the relay itself.  All Healeys used the exact same
> part above. There were similar relays: 33217 and 33204 used on different
> cars that could look the same, but maybe had there terminals in different
> locations.  You should always check the stamped part number and DATE on all
> Lucas parts prior to installing them to be sure they are for your car.
> Regards, Hank
>
> -----------------------------------------
> From: "john harper"
> To: "Michael MacLean"
> Cc: "Healeys"
> Sent: Thursday January 21 2021 5:50:15AM
> Subject: Re: [Healeys] Tonight's Wiring Dilemma
>
> Michael
>
> I have not checked the circuit diagram that you use but you would better
> to use those in the workshop manual.  The BN1 version shows the wiring to
> two overdrive relays and the centrifugal switch and to the wiring to the
> overdrive. BN2 version has far less wiring. There are also differences
> between the two, around the flasher unit.
>
> On Thu, 21 Jan 2021 at 05:28, Michael MacLean <rrengineer.mike at att.net>
> wrote:
>
>> As you can see in the two photos I am trying to connect the overdrive
>> relay to the wiring harness.  Tonight's problem is not with the color
>> coding of the wires.  It is the markings on the relay.  I have included a
>> shot of my wiring diagram to illustrate.  In the diagram the connections on
>> the relay should be W1, W2, C1 and C2.  As you can see on the relay it is
>> clearly marked W1, W2, C2 and C3.  I'm confused enough with trying to wire
>> this car as it is.  Having mismarked components doesn't help.  Just so you
>> know, the wiring diagram in the original service manual shows the same as
>> my color coded diagram.  Wrong relay?  Maybe mistaken relay.  At first I
>> thought so, but I have two overdrive relays and they are marked the same.
>> I have been buying parts over several years and have duplicated purchase
>> during a sale not knowing I bought the same part even cheaper a few years
>> before.  So who is wrong, the diagram (I doubt it) or the part?
>> Mike MacLean
>> [image: Trash13465e3e61fc9e5da7c77187d0f28ec4941]
>> [image: Trash13465c9c050611cfb7f0e960dcb385fa2e6]
>>
>>
>>
>>
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