Hi/Low Switch

Tech tips and how to's

Moderators: notoptoy, S Allen, Solex68

Post Reply
Jdflyer
Roadster Fanatic
Posts: 246
Joined: Mon Oct 26, 2015 12:50 am
Location: Phoenix, AZ

Hi/Low Switch

Post by Jdflyer »

I'm reworking my lighting circuits, trying to get ready for Solvang in 2 weeks and have a quick question

1970
Hi/Low Switch

Does it connect to ground when the high beams are on or off.
1970 SPL 311-29311
Phoenix, AZ
greydog
Roadster Fanatic-Site Supporter
Posts: 1790
Joined: Sat Nov 21, 2009 11:37 pm
Location: Vancouver, Washington
Model: 1500/1600
Year: High Windshield-68-70

Re: Hi/Low Switch

Post by greydog »

Im not the best at reading them but there are schematics in the WIKI.
Dan
SPL311 aka Skooter. Sold. Now wasting away in the SF area.
1990 Nissan 300zx. Sold this one too.
2018 VW Tiguan
Jdflyer
Roadster Fanatic
Posts: 246
Joined: Mon Oct 26, 2015 12:50 am
Location: Phoenix, AZ

Re: Hi/Low Switch

Post by Jdflyer »

Follow up question. Are the high beams on when the turn signal is futherest from the driver or closest. The owners Manual contradicts itself between the text and diagram.
1970 SPL 311-29311
Phoenix, AZ
User avatar
mraitch
Roadsteraholic
Posts: 3629
Joined: Mon Oct 02, 2006 7:03 pm
Location: Lake Balboa (SFV) - CA
Model: 1500/1600
Year: High Windshield-68-70
Contact:

Re: Hi/Low Switch

Post by mraitch »

hi beam is furthest.
You can always switch the wiring at the connection to the headlights, easiest, rather than messing with the wiring at the other end, only possible problem is that the hibeam light might be in opposition to reality.
Peter Harrison
1970 1600 (Stroker) - TOAD SAN (Eliza)
1970 1600 (Stock) - As Yet Unnamed
Lake Balboa (SFV) , California
User avatar
Curtis
Site Supporter
Posts: 4051
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: Hi/Low Switch

Post by Curtis »

The manual is not correct. It states that high is toward the steering wheel. Once again Datsun recycled some text and picture.

I just hooked up the turn signal and relay to power to confirm this. When the low beams are on the relay is also on. Clicking the stalk forward turns off the relay and the high beams come on. I use a tail light hooked up to it to make sure.
66 stroker, almost done.
67 basket case, paint coming soon.
Jdflyer
Roadster Fanatic
Posts: 246
Joined: Mon Oct 26, 2015 12:50 am
Location: Phoenix, AZ

Re: Hi/Low Switch

Post by Jdflyer »

Curtis wrote: Thu Apr 12, 2018 10:07 am The manual is not correct. It states that high is toward the steering wheel. Once again Datsun recycled some text and picture.

I just hooked up the turn signal and relay to power to confirm this. When the low beams are on the relay is also on. Clicking the stalk forward turns off the relay and the high beams come on. I use a tail light hooked up to it to make sure.
OK. Thanks Curtis, that really helps. I thought the switch would have grounded when the highbeams where on not off. So now my switch works backwards, for now...
:roll:
1970 SPL 311-29311
Phoenix, AZ
User avatar
SLOroadster
Roadsteraholic
Posts: 5340
Joined: Sun Dec 08, 2002 2:53 am
Location: Napa Ca

Re: Hi/Low Switch

Post by SLOroadster »

I've found on my '69 that when the wire in the relay breaks, it defaults to high beam. The lever goes forward for high beams.

Will
Sorry, I find modern engine swaps revolting. Keep your G, R, or U series in your Roadster!
User avatar
Curtis
Site Supporter
Posts: 4051
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: Hi/Low Switch

Post by Curtis »

SLOroadster wrote: Thu Apr 12, 2018 2:35 pm I've found on my '69 that when the wire in the relay breaks, it defaults to high beam. The lever goes forward for high beams.

Will
If you look at the switch the contact comes away from the plate when it is pushed forward breaking the ground connection. Verified by visual inspection and a volt ohm meter.
66 stroker, almost done.
67 basket case, paint coming soon.
User avatar
Curtis
Site Supporter
Posts: 4051
Joined: Fri Jan 01, 2010 2:49 pm
Location: Des Moines, WA
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: Hi/Low Switch

Post by Curtis »

If you want to switch the function of your switch all you have to do is change the position of the two headlight wires at the connector on the engine harness to the relay.
66 stroker, almost done.
67 basket case, paint coming soon.
User avatar
SLOroadster
Roadsteraholic
Posts: 5340
Joined: Sun Dec 08, 2002 2:53 am
Location: Napa Ca

Re: Hi/Low Switch

Post by SLOroadster »

Curtis wrote: Thu Apr 12, 2018 2:41 pm
SLOroadster wrote: Thu Apr 12, 2018 2:35 pm I've found on my '69 that when the wire in the relay breaks, it defaults to high beam. The lever goes forward for high beams.

Will
If you look at the switch the contact comes away from the plate when it is pushed forward breaking the ground connection. Verified by visual inspection and a volt ohm meter.
I should have said, high beams are a normally open switch, whereas the lows are switch closed. When the wire breaks on the back of the relay, (I'm guessing its a ground) the high beams stay on.

Will
Sorry, I find modern engine swaps revolting. Keep your G, R, or U series in your Roadster!
Post Reply