Im switching my system to have headlamp relays, do I want them close to the headlamps or near the firewall? Also this is a 72 with 2 headlights total, do I need 2 relays or 4 (for rt & lt high and low beam) This seems to be a gray area!

Im switching my system to have headlamp relays, do I want them close to the headlamps or near the firewall? Also this is a 72 with 2 headlights total, do I need 2 relays or 4 (for rt & lt high and low beam) This seems to be a gray area!

I mounted mine on the left side of the core support inside the engine bay.

You will only need the two relays.

You will run a large gage wire (I used a Red 12ga wire) from the battery to #30 on the relays
Run 12ga or 14ga from position #87 to your headlamps (light Green for the hi-beam/tan for the low-beam)(this will branch into two separate wires (one for each lamp)
Do this for both hi-beam and low-beam.

The existing wires will be used to operate the relays (LtGrn=hi beam/Tan=low-beam).

Cut the HL wires and connect them to pos #85 on the relays.
Pos #86 will go to ground.

(these numbers are for a standard Bosch type 4 or 5 pin relay.)

You will be surprised at the brightness of your headlamps.
I did this with my 59---I was amazed at my nighttime visibility!

Also---HL switch and dimmer should last forever as you have taken 99% of the Amp load off of them. All they have to do now is operate a 1/4amp relay (and taillights) instead of 30+amps of lights.

What relays did you buy exactly?

Hope this works
They changed their website some

http://order.waytekwire.com/IMAGES/M37/catalog/219_059.pdf

The 5-pin bracket mounts are what I used. If you go this route, you would be ahead to get the connectors and terminals.

The terminals and connector bodies are sold in bulk, so there is a minimum. I think it is $5 min for each item. (it was last time I ordered from them.

You may be ordering 10 connectors, 80 terminals, and two relays. But you wont really be spending all that much.
@$4-5 a relay, plus the connectors and terminals----still ahead of buying a kit that costs 20-50 from the big guys.

I rewired my 59 using the correct bodies and terminals-----way cheaper than going to a parts house and buying them a $6/body and
$3/5 terminals.

BTW--I added to my last post

Very nice! Thanks!

75101 relay-----#30 is power in and there are two pos #87 so each position could feed one lamp

75281 connector body

31073 terminals

http://order.waytekwire.com/IMAGES/M37/catalog/219_058.pdf