Guide to the headlamp relay mod - is one available?

An alchemy of sparks, copper wire and earth

Moderators: User administrators, Moderators

California Dreamin
Registered user
Posts: 2673
Joined: 03 Apr 2007, 12:54
80-90 Mem No: 8386
Location: Nottingham

Re: Guide to the headlamp relay mod - is one available?

Post by California Dreamin »

itchyfeet wrote:
California Dreamin wrote: At the time I didn't want to be so pretentious as to presume the way I did mine was necessarily the only way it can be done. I stopped short of writing a giude

Nobody thinks a guide is pretentious or the only way, people love to read about how you did it. :ok

Well despite perhaps appearing to be rather forward and outspoken I'm genuinely not in this to 'self promote'.
I'd love to do a 'step by step' guide....I've got a decent camera etc but I've no reason to revisit the job now it's done. However, if I get the chance to add more detail to the WIKI and perhaps a single lamp version, I will.

Martin
1989 California 2.1MV

User avatar
marlinowner
Registered user
Posts: 1530
Joined: 28 Jan 2014, 12:02
80-90 Mem No: 13646
Location: Scottish Borders

Re: Guide to the headlamp relay mod - is one available?

Post by marlinowner »

What I meant was that originally the left and right sides are separate circuits after the switches, with the upgrade you would lose both sides if the fuse blows or there is a bad contact somewhere. I agree that its very unlikely both dipped and main would fail at the same time.
1993 SA VW T25/T3 2.5i Microbus/homebrew camper
1981/1968 Marlin Kitcar TR6 Engine

California Dreamin
Registered user
Posts: 2673
Joined: 03 Apr 2007, 12:54
80-90 Mem No: 8386
Location: Nottingham

Re: Guide to the headlamp relay mod - is one available?

Post by California Dreamin »

marlinowner wrote:What I meant was that originally the left and right sides are separate circuits after the switches, with the upgrade you would lose both sides if the fuse blows or there is a bad contact somewhere. I agree that its very unlikely both dipped and main would fail at the same time.

I understand what you are saying but with only a fraction of the current flowing in the original circuit, the reasons for 'failure' are drastically reduced. Non relayed T25 headlamp switches and stalks fail BECAUSE of the high current flow, introducing relays all but eliminates this problem which must make these parts more reliable....sort of swings and roundabouts.

Martin
1989 California 2.1MV

Post Reply