I am planning on using 80/100 w H4 bulbs on my car. I am planning on installing the dynalite alternator that looks exactly like the original dynamo for extra charging capability. My question is if I
If the increase in load from the larger capacity bulbs is enough to melt the wires a relay by itself won't fix the problem. You will need larger power wires. Gary Hodson I am planning on using 80/100
You need thicker gauge wires */and/* heavy duty lamp connectors, and better wire the lamps through 4 25A relays (high beam/dip, L&R). The feed wire to the relay is best directly from the battery and
The difference between a 60 watt and a 100 watt bulb at 12 volts is 5 amps vs 8.5 amps. The stock wiring will handle that load. Heavier wiring and a relay system might make it more efficient. Bill La
I think you need to go back and do a bit of math. 2 100 watt light bulbs is 200 watts total load. Divide 200 watts by 13.5V (system voltage with the engine running) gives you a amperage draw of not q
I prefer to use lowish loads on the relays for better reliability. They cost next to nothing. The 50A fuse may be a bit to heavy, you are correct, but 20A is a bit tight as you have a surge when swit
The purpose of the fuse is not to protect the device, but instead to protect the wire. You don't want the wire to burn. As a general rule, if the device draws X amps at operating voltage, the fuse sh
Solid advise, however I prefer to use ca. 2X (or more) thicker gauge wires than necessary to minimize resistance and thus heat build up, just to be on the safe side. Kees Oudesluijs NL [demime 1.01d
That is consistent with my reading. The Healey fuses are 17.5 amp slow-blow / 25 amp fast-blow and 35 amp slow-blow / 50 amp fast blow devices. I'm speculating now--I expect all glass capsule fuses
I agree. Conservatively rating the wiring lowers resistance drop, runs at lower temperature, gives stronger connections, is more vibration resistant (if not soldered), and better absorbs mechanical
Author: Michael Salter <msalter@precisionsportscar.com>
Date: Fri, 4 Feb 2011 14:26:34 -0500
I'm not sure that we allow $10 words like "ameliorate" on this list...particularly on Fridays!!! Michael S _______________________________________________ Healeys@autox.team.net Donate: http://www.te
I do often solder the connectors. To minimize fatigue fracture I fix the first few cm's of the soldered wire to the body/engine etc. to prevent flexing. This is adequate against fracture [demime 1.0
There appears to be a lot of debate about the value of soldering crimped connections. Soldering limits corrosion and in theory should provide a lower resistance connection than well done crimping alo
Thanks for the wakeup call. I was a professor. I guess I just can't help it. I'll try not to let words get in the way again. Hap I'm not sure that we allow $10 words like "ameliorate" on this list..
Thanks for sharing this info. Wikipedia is great. I remember the old BUSS data sheets. We had them at the Alfa dealer I once worked at. Hap Hi Hap, In days of old I recall seeing a note about the Br
One person did ask for the info on the low beam high beam relay, so I scanned and made a PDF out of the wiring diagram book, and wrote wiring instructions. So if anyone else is interested, drop me a